Today I upgraded one of my computer to Kubuntu 8.10 + KDE4.2.0 (from the intrepid-backport).

I've got another computer with Kubuntu 8.04.2+KDE3.5.10, I use Konsole, ssh -X to connect into the KDE4 computer and launch kdeinit and then kate.

Quit kate and the kate crashes, seems that I can always reproduce this.


Application: Kate (kate), signal SIGABRT
[Current thread is 0 (LWP 25668)]

Thread 2 (Thread 0xb3cd1b90 (LWP 25675)):
#0 0xb805f430 in __kernel_vsyscall ()
#1 0xb6894df1 in select () from /lib/tls/i686/cmov/libc.so.6
#2 0xb6b63150 in ?? () from /usr/lib/libQtCore.so.4
#3 0xb6a936ae in ?? () from /usr/lib/libQtCore.so.4
#4 0xb60c250f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5 0xb689ca0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5c046c0 (LWP 25668)):
[KCrash Handler]
#6 0xb805f430 in __kernel_vsyscall ()
#7 0xb67e68a0 in raise () from /lib/tls/i686/cmov/libc.so.6
#8 0xb67e8268 in abort () from /lib/tls/i686/cmov/libc.so.6
#9 0xb682416d in ?? () from /lib/tls/i686/cmov/libc.so.6
#10 0xb682af7f in ?? () from /lib/tls/i686/cmov/libc.so.6
#11 0xb682ca8d in ?? () from /lib/tls/i686/cmov/libc.so.6
#12 0xb682debf in ?? () from /lib/tls/i686/cmov/libc.so.6
#13 0xb682ede6 in realloc () from /lib/tls/i686/cmov/libc.so.6
#14 0xb5a00148 in dbus_realloc () from /lib/libdbus-1.so.3
#15 0xb5a00cef in ?? () from /lib/libdbus-1.so.3
#16 0xb5a0499f in ?? () from /lib/libdbus-1.so.3
#17 0xb5a0524b in ?? () from /lib/libdbus-1.so.3
#18 0xb59fb8a3 in ?? () from /lib/libdbus-1.so.3
#19 0xb59fbded in ?? () from /lib/libdbus-1.so.3
#20 0xb59f9e2f in ?? () from /lib/libdbus-1.so.3
#21 0xb59e492e in ?? () from /lib/libdbus-1.so.3
#22 0xb59e6ec2 in ?? () from /lib/libdbus-1.so.3
#23 0xb59f4151 in dbus_pending_call_block () from /lib/libdbus-1.so.3
#24 0xb59e5e9a in dbus_connection_send_with_reply_and_block () from /lib/libdbus-1.so.3
#25 0xb6c907a9 in ?? () from /usr/lib/libQtDBus.so.4
#26 0xb6c913c3 in ?? () from /usr/lib/libQtDBus.so.4
#27 0xb6c9e1ff in ?? () from /usr/lib/libQtDBus.so.4
#28 0xb6c9e2ff in QDBusInterface::QDBusInterface () from /usr/lib/libQtDBus.so.4
#29 0xb7e6107f in ?? () from /usr/lib/libkio.so.5
#30 0xb7e64bef in KIO::Scheduler::qt_metacall () from /usr/lib/libkio.so.5
#31 0xb6b98a60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#32 0xb6b98e60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#33 0xb6b98eeb in QObject::destroyed () from /usr/lib/libQtCore.so.4
#34 0xb6b9a9a9 in QObject::~QObject () from /usr/lib/libQtCore.so.4
#35 0xb708eb0f in QWidget::~QWidget () from /usr/lib/libQtGui.so.4
#36 0xb73e0921 in QMainWindow::~QMainWindow () from /usr/lib/libQtGui.so.4
#37 0xb7c32849 in KMainWindow::~KMainWindow () from /usr/lib/libkdeui.so.5
#38 0xb7c753c7 in KXmlGuiWindow::~KXmlGuiWindow () from /usr/lib/libkdeui.so.5
#39 0xb7f8c688 in KParts::MainWindow::~MainWindow () from /usr/lib/libkparts.so.4
#40 0xb8007c4a in ?? () from /usr/lib/libkateinterfaces.so.4
#41 0xb7fe1844 in ?? () from /usr/lib/libkateinterfaces.so.4
#42 0xb7fc89de in KateApp::shutdownKate () from /usr/lib/libkateinterfaces.so.4
#43 0xb7fdf2f6 in ?? () from /usr/lib/libkateinterfaces.so.4
#44 0xb7fe8740 in ?? () from /usr/lib/libkateinterfaces.so.4
#45 0xb6b98a60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#46 0xb6b98e60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#47 0xb702f5f1 in QAction::triggered () from /usr/lib/libQtGui.so.4
#48 0xb702ff5f in QAction::activate () from /usr/lib/libQtGui.so.4
#49 0xb740d564 in ?? () from /usr/lib/libQtGui.so.4
#50 0xb740dff2 in QMenu::mouseReleaseEvent () from /usr/lib/libQtGui.so.4
#51 0xb7c34f25 in KMenu::mouseReleaseEvent () from /usr/lib/libkdeui.so.5
#52 0xb708d962 in QWidget::event () from /usr/lib/libQtGui.so.4
#53 0xb74102e9 in QMenu::event () from /usr/lib/libQtGui.so.4
#54 0xb70358ec in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#55 0xb703e0e1 in QApplication::notify () from /usr/lib/libQtGui.so.4
#56 0xb7b4efed in KApplication::notify () from /usr/lib/libkdeui.so.5
#57 0xb6b83e61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#58 0xb703d36e in QApplicationPrivate::sendMouseEvent () from /usr/lib/libQtGui.so.4
#59 0xb70a78de in ?? () from /usr/lib/libQtGui.so.4
#60 0xb70a69e5 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#61 0xb70d07aa in ?? () from /usr/lib/libQtGui.so.4
#62 0xb5fff6f8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#63 0xb6002da3 in ?? () from /usr/lib/libglib-2.0.so.0
#64 0xb6002f61 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#65 0xb6bae478 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#66 0xb70cfea5 in ?? () from /usr/lib/libQtGui.so.4
#67 0xb6b8252a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#68 0xb6b826ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#69 0xb6b84da5 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#70 0xb7035767 in QApplication::exec () from /usr/lib/libQtGui.so.4
#71 0xb802973d in kdemain () from /usr/lib/libkdeinit4_kate.so
#72 0x08048672 in _start ()

Please ensure the affected system is fully updated. The crash looks to be somewhere within DBus, or Qt's bindings to it.