I'm getting some serious UI lag, and some crashes with svn from the 7th of sept or so. The UI becomes rather unusable (takes seconds for anything to react to input), I even tried increasing the "network sleep" option thinking that would help, but it doesn't seem to.

Code: Select all

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f5b367c3780 (LWP 11298)]   
QSortFilterProxyModel::parent (this=0x4f680a0, child=<value optimized out>) at ../../include/QtCore/../../../../kdesvn/qt-copy/src/corelib/kernel/qabstractitemmodel.h:66
66              : r(other.r), c(other.c), p(other.p), m(other.m) {}                                                                                                     
(gdb) bt                                                                                                                                                                 
#0  QSortFilterProxyModel::parent (this=0x4f680a0, child=<value optimized out>) at ../../include/QtCore/../../../../kdesvn/qt-copy/src/corelib/kernel/qabstractitemmodel.h:66
#1  0x00007f5b35992187 in QTreeView::indexRowSizeHint (this=0x4f5c0c0, index=@0x61e3520) at ../../include/QtCore/../../../../kdesvn/qt-copy/src/corelib/kernel/qabstractitemmodel.h:364
#2  0x00007f5b3599278e in QTreeViewPrivate::itemHeight (this=0x4f5c140, item=0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/itemviews/qtreeview.cpp:3100                               
#3  0x00007f5b35996bbd in QTreeView::verticalOffset (this=0x4f5c0c0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/itemviews/qtreeview.cpp:2000                                           
#4  0x00007f5b3596a5bd in QAbstractItemViewPrivate::contentsOffset (this=<value optimized out>)                                                                                       
    at ../../include/QtGui/private/../../../../../kdesvn/qt-copy/src/gui/itemviews/qabstractitemview_p.h:262                                                                           
#5  0x00007f5b355f0c1b in QWidgetPrivate::drawWidget (this=0x4f5c660, pdev=0xc775c8, rgn=@0x7fff3e9064d0, offset=@0x7fff3e9064c0, flags=4, sharedPainter=0x56d4ee0)                   
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4504                                                                                                                 
#6  0x00007f5b355f0f11 in QWidgetPrivate::paintSiblingsRecursive (this=0x4f5c140, pdev=0xc775c8, siblings=@0x7fff3e906940, index=0, rgn=@0x7fff3e9065b0, offset=@0x7fff3e906aa0, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626                                                                                           
#7  0x00007f5b355f0e2b in QWidgetPrivate::paintSiblingsRecursive (this=0x4f5c140, pdev=0xc775c8, siblings=@0x7fff3e906940, index=2, rgn=@0x7fff3e906690, offset=@0x7fff3e906aa0, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4616                                                                                           
#8  0x00007f5b355f0e2b in QWidgetPrivate::paintSiblingsRecursive (this=0x4f5c140, pdev=0xc775c8, siblings=@0x7fff3e906940, index=6, rgn=@0x7fff3e906770, offset=@0x7fff3e906aa0, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4616                                                                                           
#9  0x00007f5b355f0e2b in QWidgetPrivate::paintSiblingsRecursive (this=0x4f5c140, pdev=0xc775c8, siblings=@0x7fff3e906940, index=7, rgn=@0x7fff3e906ab0, offset=@0x7fff3e906aa0, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4616                                                                                           
#10 0x00007f5b355f0518 in QWidgetPrivate::drawWidget (this=0x4f5c140, pdev=0xc775c8, rgn=@0x7fff3e906ab0, offset=@0x7fff3e906aa0, flags=4, sharedPainter=0x56d4ee0)                       
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569                                                                                                                   
#11 0x00007f5b355f0f11 in QWidgetPrivate::paintSiblingsRecursive (this=0xca38d0, pdev=0xc775c8, siblings=@0x7fff3e906c80, index=5, rgn=@0x7fff3e906df0, offset=@0x7fff3e906de0, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#12 0x00007f5b355f0518 in QWidgetPrivate::drawWidget (this=0xca38d0, pdev=0xc775c8, rgn=@0x7fff3e906df0, offset=@0x7fff3e906de0, flags=4, sharedPainter=0x56d4ee0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#13 0x00007f5b355f0f11 in QWidgetPrivate::paintSiblingsRecursive (this=0xcb39f0, pdev=0xc775c8, siblings=@0x7fff3e9070a0, index=0, rgn=@0x7fff3e906ed0, offset=@0x7fff3e907200, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#14 0x00007f5b355f0e2b in QWidgetPrivate::paintSiblingsRecursive (this=0xcb39f0, pdev=0xc775c8, siblings=@0x7fff3e9070a0, index=1, rgn=@0x7fff3e907210, offset=@0x7fff3e907200, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4616
#15 0x00007f5b355f0518 in QWidgetPrivate::drawWidget (this=0xcb39f0, pdev=0xc775c8, rgn=@0x7fff3e907210, offset=@0x7fff3e907200, flags=4, sharedPainter=0x56d4ee0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#16 0x00007f5b355f0f11 in QWidgetPrivate::paintSiblingsRecursive (this=0xcd14d0, pdev=0xc775c8, siblings=@0x7fff3e9073e0, index=0, rgn=@0x7fff3e907550, offset=@0x7fff3e907540, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#17 0x00007f5b355f0518 in QWidgetPrivate::drawWidget (this=0xcd14d0, pdev=0xc775c8, rgn=@0x7fff3e907550, offset=@0x7fff3e907540, flags=4, sharedPainter=0x56d4ee0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#18 0x00007f5b355f0f11 in QWidgetPrivate::paintSiblingsRecursive (this=0xc9eb30, pdev=0xc775c8, siblings=@0x7fff3e907720, index=1, rgn=@0x7fff3e907890, offset=@0x7fff3e907880, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#19 0x00007f5b355f0518 in QWidgetPrivate::drawWidget (this=0xc9eb30, pdev=0xc775c8, rgn=@0x7fff3e907890, offset=@0x7fff3e907880, flags=4, sharedPainter=0x56d4ee0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#20 0x00007f5b355f0f11 in QWidgetPrivate::paintSiblingsRecursive (this=0xc99a30, pdev=0xc775c8, siblings=@0x7fff3e907a60, index=0, rgn=@0x7fff3e907bd0, offset=@0x7fff3e907bc0, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#21 0x00007f5b355f0518 in QWidgetPrivate::drawWidget (this=0xc99a30, pdev=0xc775c8, rgn=@0x7fff3e907bd0, offset=@0x7fff3e907bc0, flags=4, sharedPainter=0x56d4ee0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#22 0x00007f5b355f0f11 in QWidgetPrivate::paintSiblingsRecursive (this=0xcd56b0, pdev=0xc775c8, siblings=@0x7fff3e907da0, index=1, rgn=@0x7fff3e907f10, offset=@0x7fff3e907f00, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#23 0x00007f5b355f0518 in QWidgetPrivate::drawWidget (this=0xcd56b0, pdev=0xc775c8, rgn=@0x7fff3e907f10, offset=@0x7fff3e907f00, flags=4, sharedPainter=0x56d4ee0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#24 0x00007f5b355f0f11 in QWidgetPrivate::paintSiblingsRecursive (this=0xc9f780, pdev=0xc775c8, siblings=@0x7fff3e9081c0, index=5, rgn=@0x7fff3e907ff0, offset=@0xd7c978, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#25 0x00007f5b355f0e2b in QWidgetPrivate::paintSiblingsRecursive (this=0xc9f780, pdev=0xc775c8, siblings=@0x7fff3e9081c0, index=37, rgn=@0x7fff3e9083a0, offset=@0xd7c978, flags=4,
    sharedPainter=0x56d4ee0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4616
#26 0x00007f5b355f0518 in QWidgetPrivate::drawWidget (this=0xc9f780, pdev=0xc775c8, rgn=@0x7fff3e9083a0, offset=@0xd7c978, flags=4, sharedPainter=0x56d4ee0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#27 0x00007f5b35715828 in QWidgetBackingStore::cleanRegion (this=0xd7c960, rgn=@0x7fff3e908410, widget=0xd2c890, recursiveCopyToScreen=true)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/painting/qbackingstore.cpp:1033
#28 0x00007f5b3571635a in qt_syncBackingStore (widget=0xd2c890) at /home/kde4-devel/kdesvn/qt-copy/src/gui/painting/qbackingstore.cpp:319
#29 0x00007f5b355f37cd in QWidget::event (this=0xd2c890, event=0x5633530) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:7303
#30 0x00007f5b35890ba1 in QMainWindow::event (this=0xd2c890, event=0x5633530) at /home/kde4-devel/kdesvn/qt-copy/src/gui/widgets/qmainwindow.cpp:1274
---Type <return> to continue, or q <return> to quit---
#31 0x00007f5b350ed610 in KXmlGuiWindow::event (this=0x0, ev=0x4f680a0) at /home/kde4-devel/kdesvn/kdelibs/kdeui/xmlgui/kxmlguiwindow.cpp:125
#32 0x00007f5b355b02a5 in QApplicationPrivate::notify_helper (this=0xbf15f0, receiver=0xd2c890, e=0x5633530) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:3800
#33 0x00007f5b355b69d2 in QApplication::notify (this=0x7fff3e909090, receiver=0xd2c890, e=0x5633530) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:3765
#34 0x00007f5b3501454e in KApplication::notify (this=0x7fff3e909090, receiver=0xd2c890, event=0x5633530) at /home/kde4-devel/kdesvn/kdelibs/kdeui/kernel/kapplication.cpp:311
#35 0x00007f5b346e84b7 in QCoreApplication::notifyInternal (this=0x7fff3e909090, receiver=0xd2c890, event=0x5633530) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:587
#36 0x00007f5b346e8cb7 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0xbcb530)
    at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.h:215
#37 0x00007f5b34708ee9 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../../../kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.h:220
#38 0x00007f5b2f724892 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#39 0x00007f5b2f72801d in ?? () from /usr/lib/libglib-2.0.so.0
#40 0x00007f5b2f7281db in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#41 0x00007f5b34708bd9 in QEventDispatcherGlib::processEvents (this=0xbf1070, flags=<value optimized out>) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qeventdispatcher_glib.cpp:325
#42 0x00007f5b35624206 in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qguieventdispatcher_glib.cpp:204
#43 0x00007f5b346e71e4 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 1049660912}) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qeventloop.cpp:149
#44 0x00007f5b346e7368 in QEventLoop::exec (this=0x7fff3e908e30, flags={i = 1049660992}) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qeventloop.cpp:196
#45 0x00007f5b346e8f3d in QCoreApplication::exec () at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:849
#46 0x000000000042f1a2 in main (argc=2, argv=0x7fff3e909cd8) at /home/moose/build/ktorrent4/ktorrent/main.cpp:167

edit: I have a sinking suspision that the ui lag has something to do with the GLIB event loop support in qt...

What is GUI update interval set to ?

George wrote:What is GUI update interval set to ?

1000ms

It seems that QT_NO_GLIB=1 helped, but its still pretty laggy, usable though.

Heres a new crash:

Code: Select all

Application: KTorrent (ktorrent), signal SIGSEGV
0x00007f06c50e70e1 in nanosleep () from /lib/libc.so.6
[Current thread is 0 (LWP 23413)]

Thread 7 (Thread 0x423e4950 (LWP 23475)):
#0  0x00007f06c510fd96 in poll () from /lib/libc.so.6
#1  0x00007f06c45af60b in net::DownloadThread::waitForSocketReady (this=0x11db420, timeout=12) at /home/moose/build/ktorrent4/libbtcore/net/downloadthread.cpp:157
#2  0x00007f06c45af65b in net::DownloadThread::update (this=0x11db420) at /home/moose/build/ktorrent4/libbtcore/net/downloadthread.cpp:51
#3  0x00007f06c45b0c02 in net::NetworkThread::run (this=0x11db420) at /home/moose/build/ktorrent4/libbtcore/net/networkthread.cpp:48
#4  0x00007f06c5dc5542 in QThreadPrivate::start (arg=0x11db420) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/thread/qthread_unix.cpp:190
#5  0x00007f06c5b48fc7 in start_thread () from /lib/libpthread.so.0
#6  0x00007f06c51187cd in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x42be5950 (LWP 23476)):
#0  0x00007f06c5b4cd29 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f06c5dc624b in QWaitCondition::wait (this=0x11dbd98, mutex=0x11dbda0, time=18446744073709551615) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/thread/qwaitcondition_unix.cpp:88
#2  0x00007f06c45aec63 in net::UploadThread::update (this=0x11dbd30) at /home/moose/build/ktorrent4/libbtcore/net/uploadthread.cpp:73
#3  0x00007f06c45b0c02 in net::NetworkThread::run (this=0x11dbd30) at /home/moose/build/ktorrent4/libbtcore/net/networkthread.cpp:48
#4  0x00007f06c5dc5542 in QThreadPrivate::start (arg=0x11dbd30) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/thread/qthread_unix.cpp:190
#5  0x00007f06c5b48fc7 in start_thread () from /lib/libpthread.so.0
#6  0x00007f06c51187cd in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x413e2950 (LWP 23521)):
#0  0x00007f06c5b4cfad in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f06b243bbd1 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f06c5b48fc7 in start_thread () from /lib/libpthread.so.0
#3  0x00007f06c51187cd in clone () from /lib/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x433e6950 (LWP 23522)):
#0  0x00007f06c5111f12 in select () from /lib/libc.so.6
#1  0x00007f06c5ea839d in QEventDispatcherUNIX::select (this=<value optimized out>, nfds=42, readfds=0x58c90c0, writefds=0x58c9358, exceptfds=0x58c95f0, timeout=0x0)
    at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qeventdispatcher_unix.cpp:608
#2  0x00007f06c5ea8bef in QEventDispatcherUNIXPrivate::doSelect (this=0x58c8f10, flags={i = 1128160944}, timeout=0x0)
    at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qeventdispatcher_unix.cpp:172
#3  0x00007f06c5ea9f1a in QEventDispatcherUNIX::processEvents (this=0x57b12f0, flags={i = 1128161008}) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qeventdispatcher_unix.cpp:895
#4  0x00007f06c5e851e4 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 1128161056}) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qeventloop.cpp:149
#5  0x00007f06c5e85368 in QEventLoop::exec (this=0x433e5f60, flags={i = 1128161136}) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qeventloop.cpp:196
#6  0x00007f06c5dc2e8e in QThread::exec (this=<value optimized out>) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/thread/qthread.cpp:464
#7  0x00007f06b26943cf in Phonon::Xine::XineThread::run (this=0x57bf080) at /home/kde4-devel/kdesvn/kdesupport/phonon/xine/xinethread.cpp:140
#8  0x00007f06c5dc5542 in QThreadPrivate::start (arg=0x57bf080) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/thread/qthread_unix.cpp:190
#9  0x00007f06c5b48fc7 in start_thread () from /lib/libpthread.so.0
#10 0x00007f06c51187cd in clone () from /lib/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x43be7950 (LWP 23525)):
#0  0x00007f06c510fd96 in poll () from /lib/libc.so.6
#1  0x00007f06ac57d7f9 in ?? () from /usr/lib/xine/plugins/1.23/xineplug_ao_out_alsa.so
#2  0x00007f06c5b48fc7 in start_thread () from /lib/libpthread.so.0
#3  0x00007f06c51187cd in clone () from /lib/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x443e8950 (LWP 23526)):
#0  0x00007f06c5b4cd29 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f06b244ca03 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f06c5b48fc7 in start_thread () from /lib/libpthread.so.0
#3  0x00007f06c51187cd in clone () from /lib/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f06c7f65780 (LWP 23413)):
[KCrash Handler]
#5  QSortFilterProxyModelPrivate::source_to_proxy (this=0x5a8c2d0, source_index=@0x7fffd00a6b30) at ../../include/QtCore/../../../../kdesvn/qt-copy/src/corelib/kernel/qabstractitemmodel.h:364
#6  0x00007f06c716f7fb in QSortFilterProxyModel::mapFromSource (this=<value optimized out>, sourceIndex=@0x9) at /home/kde4-devel/kdesvn/qt-copy/src/gui/itemviews/qsortfilterproxymodel.cpp:2260
#7  0x00007f06c716c668 in QSortFilterProxyModel::parent (this=0x7000000000000fc, child=<value optimized out>) at /home/kde4-devel/kdesvn/qt-copy/src/gui/itemviews/qsortfilterproxymodel.cpp:1451
#8  0x00007f06c7132187 in QTreeView::indexRowSizeHint (this=0x5a68a50, index=@0x804c590) at ../../include/QtCore/../../../../kdesvn/qt-copy/src/corelib/kernel/qabstractitemmodel.h:364
#9  0x00007f06c713278e in QTreeViewPrivate::itemHeight (this=0x5a7fcf0, item=0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/itemviews/qtreeview.cpp:3100
#10 0x00007f06c7136bbd in QTreeView::verticalOffset (this=0x5a68a50) at /home/kde4-devel/kdesvn/qt-copy/src/gui/itemviews/qtreeview.cpp:2000
#11 0x00007f06c710a5bd in QAbstractItemViewPrivate::contentsOffset (this=<value optimized out>)
    at ../../include/QtGui/private/../../../../../kdesvn/qt-copy/src/gui/itemviews/qabstractitemview_p.h:262
#12 0x00007f06c6d90c1b in QWidgetPrivate::drawWidget (this=0x5a80290, pdev=0x13b7338, rgn=@0x7fffd00a70a0, offset=@0x7fffd00a7090, flags=4, sharedPainter=0x6446bd0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4504
#13 0x00007f06c6d90f11 in QWidgetPrivate::paintSiblingsRecursive (this=0x5a7fcf0, pdev=0x13b7338, siblings=@0x7fffd00a7510, index=0, rgn=@0x7fffd00a7180, offset=@0x7fffd00a7670, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#14 0x00007f06c6d90e2b in QWidgetPrivate::paintSiblingsRecursive (this=0x5a7fcf0, pdev=0x13b7338, siblings=@0x7fffd00a7510, index=2, rgn=@0x7fffd00a7260, offset=@0x7fffd00a7670, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4616
#15 0x00007f06c6d90e2b in QWidgetPrivate::paintSiblingsRecursive (this=0x5a7fcf0, pdev=0x13b7338, siblings=@0x7fffd00a7510, index=6, rgn=@0x7fffd00a7340, offset=@0x7fffd00a7670, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4616
#16 0x00007f06c6d90e2b in QWidgetPrivate::paintSiblingsRecursive (this=0x5a7fcf0, pdev=0x13b7338, siblings=@0x7fffd00a7510, index=7, rgn=@0x7fffd00a7680, offset=@0x7fffd00a7670, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4616
#17 0x00007f06c6d90518 in QWidgetPrivate::drawWidget (this=0x5a7fcf0, pdev=0x13b7338, rgn=@0x7fffd00a7680, offset=@0x7fffd00a7670, flags=4, sharedPainter=0x6446bd0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#18 0x00007f06c6d90f11 in QWidgetPrivate::paintSiblingsRecursive (this=0x1356ae0, pdev=0x13b7338, siblings=@0x7fffd00a7850, index=5, rgn=@0x7fffd00a79c0, offset=@0x7fffd00a79b0, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#19 0x00007f06c6d90518 in QWidgetPrivate::drawWidget (this=0x1356ae0, pdev=0x13b7338, rgn=@0x7fffd00a79c0, offset=@0x7fffd00a79b0, flags=4, sharedPainter=0x6446bd0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#20 0x00007f06c6d90f11 in QWidgetPrivate::paintSiblingsRecursive (this=0x12e2980, pdev=0x13b7338, siblings=@0x7fffd00a7c70, index=0, rgn=@0x7fffd00a7aa0, offset=@0x7fffd00a7dd0, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#21 0x00007f06c6d90e2b in QWidgetPrivate::paintSiblingsRecursive (this=0x12e2980, pdev=0x13b7338, siblings=@0x7fffd00a7c70, index=1, rgn=@0x7fffd00a7de0, offset=@0x7fffd00a7dd0, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4616
#22 0x00007f06c6d90518 in QWidgetPrivate::drawWidget (this=0x12e2980, pdev=0x13b7338, rgn=@0x7fffd00a7de0, offset=@0x7fffd00a7dd0, flags=4, sharedPainter=0x6446bd0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#23 0x00007f06c6d90f11 in QWidgetPrivate::paintSiblingsRecursive (this=0x13f6510, pdev=0x13b7338, siblings=@0x7fffd00a7fb0, index=0, rgn=@0x7fffd00a8120, offset=@0x7fffd00a8110, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#24 0x00007f06c6d90518 in QWidgetPrivate::drawWidget (this=0x13f6510, pdev=0x13b7338, rgn=@0x7fffd00a8120, offset=@0x7fffd00a8110, flags=4, sharedPainter=0x6446bd0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#25 0x00007f06c6d90f11 in QWidgetPrivate::paintSiblingsRecursive (this=0x1238c40, pdev=0x13b7338, siblings=@0x7fffd00a82f0, index=1, rgn=@0x7fffd00a8460, offset=@0x7fffd00a8450, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#26 0x00007f06c6d90518 in QWidgetPrivate::drawWidget (this=0x1238c40, pdev=0x13b7338, rgn=@0x7fffd00a8460, offset=@0x7fffd00a8450, flags=4, sharedPainter=0x6446bd0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#27 0x00007f06c6d90f11 in QWidgetPrivate::paintSiblingsRecursive (this=0x1400060, pdev=0x13b7338, siblings=@0x7fffd00a8630, index=0, rgn=@0x7fffd00a87a0, offset=@0x7fffd00a8790, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#28 0x00007f06c6d90518 in QWidgetPrivate::drawWidget (this=0x1400060, pdev=0x13b7338, rgn=@0x7fffd00a87a0, offset=@0x7fffd00a8790, flags=4, sharedPainter=0x6446bd0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#29 0x00007f06c6d90f11 in QWidgetPrivate::paintSiblingsRecursive (this=0x13fc7f0, pdev=0x13b7338, siblings=@0x7fffd00a8970, index=1, rgn=@0x7fffd00a8ae0, offset=@0x7fffd00a8ad0, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#30 0x00007f06c6d90518 in QWidgetPrivate::drawWidget (this=0x13fc7f0, pdev=0x13b7338, rgn=@0x7fffd00a8ae0, offset=@0x7fffd00a8ad0, flags=4, sharedPainter=0x6446bd0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#31 0x00007f06c6d90f11 in QWidgetPrivate::paintSiblingsRecursive (this=0x13badd0, pdev=0x13b7338, siblings=@0x7fffd00a8d90, index=5, rgn=@0x7fffd00a8bc0, offset=@0x1224268, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4626
#32 0x00007f06c6d90e2b in QWidgetPrivate::paintSiblingsRecursive (this=0x13badd0, pdev=0x13b7338, siblings=@0x7fffd00a8d90, index=37, rgn=@0x7fffd00a8f70, offset=@0x1224268, flags=4,
    sharedPainter=0x6446bd0) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4616
#33 0x00007f06c6d90518 in QWidgetPrivate::drawWidget (this=0x13badd0, pdev=0x13b7338, rgn=@0x7fffd00a8f70, offset=@0x1224268, flags=4, sharedPainter=0x6446bd0)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:4569
#34 0x00007f06c6eb5828 in QWidgetBackingStore::cleanRegion (this=0x1224250, rgn=@0x7fffd00a8fe0, widget=0x1405f50, recursiveCopyToScreen=true)
    at /home/kde4-devel/kdesvn/qt-copy/src/gui/painting/qbackingstore.cpp:1033
#35 0x00007f06c6eb635a in qt_syncBackingStore (widget=0x1405f50) at /home/kde4-devel/kdesvn/qt-copy/src/gui/painting/qbackingstore.cpp:319
#36 0x00007f06c6d937cd in QWidget::event (this=0x1405f50, event=0x7dba620) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:7303
#37 0x00007f06c7030ba1 in QMainWindow::event (this=0x1405f50, event=0x7dba620) at /home/kde4-devel/kdesvn/qt-copy/src/gui/widgets/qmainwindow.cpp:1274
#38 0x00007f06c688c5e0 in KXmlGuiWindow::event (this=0x7fffd00a6b10, ev=0x7000000000000fc) at /home/kde4-devel/kdesvn/kdelibs/kdeui/xmlgui/kxmlguiwindow.cpp:125
#39 0x00007f06c6d502a5 in QApplicationPrivate::notify_helper (this=0x11f6a40, receiver=0x1405f50, e=0x7dba620) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:3800
#40 0x00007f06c6d569d2 in QApplication::notify (this=0x7fffd00a9e70, receiver=0x1405f50, e=0x7dba620) at /home/kde4-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:3765
#41 0x00007f06c67b1e3e in KApplication::notify (this=0x7fffd00a9e70, receiver=0x1405f50, event=0x7dba620) at /home/kde4-devel/kdesvn/kdelibs/kdeui/kernel/kapplication.cpp:307
#42 0x00007f06c5e864b7 in QCoreApplication::notifyInternal (this=0x7fffd00a9e70, receiver=0x1405f50, event=0x7dba620) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:587
#43 0x00007f06c5e86cb7 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x11d0530)
    at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.h:215
#44 0x00007f06c6dc4d9c in QEventDispatcherX11::processEvents (this=0x11f5a40, flags={i = -804611168}) at ../../include/QtCore/../../../../kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.h:220
#45 0x00007f06c5e851e4 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -804611120}) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qeventloop.cpp:149
#46 0x00007f06c5e85368 in QEventLoop::exec (this=0x7fffd00a9c10, flags={i = -804611040}) at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qeventloop.cpp:196
#47 0x00007f06c5e86f3d in QCoreApplication::exec () at /home/kde4-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:849
#48 0x000000000042f1a2 in main (argc=3, argv=0x7fffd00aaab8) at /home/moose/build/ktorrent4/ktorrent/main.cpp:167



Relatively recent ktorrent. What I did was add a new torrent to the "scanfolder" folder I have setup, and slightly after its loaded, ktorrent crashed.

That is a Qt crash

Could you submit it upstream then?