Hello,
could you please look at my (already invalid) bug?:
http://bugs.kde.org/show_bug.cgi?id=192998
I think that when Amarok is opened (doesn't have to play any music) slows/freezes playing videos.
Thank you.

More info:
Version:          2.0.2 (using 4.2.2 (KDE 4.2.2), Kubuntu packages)
Compiler:          cc
OS:                Linux (x86_64) release 2.6.28-12-generic

System Setting -> Multimedia:
Device Pref.: all is set to HDA Intel (ALC262 Analog)
Backend: Xine
Deinterlacing media: DVD
Deinterlacing method: use_vo_driver

I used default settings for xine (VLC and Kaffeine).

Console output (amarok):

$ amarok
amarok(23376) Phonon::KdePlatformPlugin::createBackend: using backend:  "Xine"

** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 0


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 0


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 80000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 20000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 160000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 40000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 240000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 60000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 320000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 80000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 400000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 100000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 480000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 120000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 560000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 140000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 640000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 160000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 720000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 180000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 800000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 200000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 880000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 220000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 960000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 240000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 1040000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 260000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 1120000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 280000


** (process:23376): WARNING **: Unexpected image type in mhni: 1029, offset: 1200000


** (process:23376): WARNING **: Unexpected image type in mhni: 1028, offset: 300000

Object::connect: No such slot MainWindow::showStatistics() in /build/buildd/amarok-2.0.2mysql5.1.30/amarok-2.0.2/src/MainWindow.cpp:692                                                               
Object::connect:  (receiver name: 'MainWindow')                                                   
QLayout: Attempting to add QLayout "" to MainWindow "MainWindow", which already has a layout       
link XMLID_7_ hasn't been detected!                                                               
link XMLID_7_ hasn't been detected!                                                               
Couldn't resolve property: radialGradient3986                                                     
link XMLID_7_ hasn't been detected!                                                               
link XMLID_7_ hasn't been detected!                                                               
Couldn't resolve property: radialGradient3986                                                     
QWidget::insertAction: Attempt to insert null action                                               
QWidget::insertAction: Attempt to insert null action                                               
QWidget::insertAction: Attempt to insert null action                                               
QWidget::insertAction: Attempt to insert null action                                               
QWidget::insertAction: Attempt to insert null action                                               
QWidget::insertAction: Attempt to insert null action                                               
QWidget::insertAction: Attempt to insert null action                                               
amarok(23376) Plasma::Applet::save: saving to "1"                                                 
amarok(23376) Context::ContextView::setContainment: "" Line:  599                                 
amarok(23376) Plasma::ThemePrivate::config: using theme for app "amarok"                           
amarok(23376) Plasma::Applet::save: saving to "2"                                                 
amarok(23376) Plasma::Applet::save: saving to "3"                                                 
amarok(23376) Plasma::Applet::save: saving to "4"                                                 
amarok(23376) CurrentTrack::dataUpdated: CurrentTrack::dataUpdated                                 
amarok(23376) Context::ColumnContainment::insertInGrid: "" Line:  603                             
amarok(23376) Context::ColumnContainment::insertInGrid: "" Line:  603                             
amarok(23376) Context::ColumnContainment::insertInGrid: "" Line:  603                             
link XMLID_7_ hasn't been detected!                                                               
link XMLID_7_ hasn't been detected!                                                               
Couldn't resolve property: radialGradient3986                                                     
link XMLID_7_ hasn't been detected!                                                               
link XMLID_7_ hasn't been detected!                                                               
Couldn't resolve property: radialGradient3986                                                     
link XMLID_7_ hasn't been detected!                                                               
link XMLID_7_ hasn't been detected!                                                               
Couldn't resolve property: radialGradient3986                                                     
link XMLID_7_ hasn't been detected!                                                               
link XMLID_7_ hasn't been detected!                                                               
Couldn't resolve property: radialGradient3986                                                     
link XMLID_7_ hasn't been detected!                                                               
link XMLID_7_ hasn't been detected!                                                               
Couldn't resolve property: radialGradient3986                                                     
link XMLID_7_ hasn't been detected!                                                               
link XMLID_7_ hasn't been detected!                                                               
Couldn't resolve property: radialGradient3986                                                     
Object::connect: No such slot FileBrowser::Widget::setDir( const QString& ) in /build/buildd/amarok-2.0.2mysql5.1.30/amarok-2.0.2/src/browsers/filebrowser/FileBrowser.cpp:112                         
Object::connect:  (sender name:  'KBookmarkHandler')                                             
Object::connect:  (receiver name: 'FileBrowser::Widget')                                           
link XMLID_7_ hasn't been detected!                                                               
link XMLID_7_ hasn't been detected!                                                               
Couldn't resolve property: radialGradient3986                                                     
link XMLID_7_ hasn't been detected!                                                               
link XMLID_7_ hasn't been detected!                                                               
Couldn't resolve property: radialGradient3986                                                     
amarok(23376) KNetworkAccessManager::createRequest: GetOperation:  QUrl( "http://ws.audioscrobbler.com/2.0/?api_key=402d3ca8e9bc9d3cf9b85e1202944ca5&api_sig=59e4141c5d1975291327e57989505fcb&authToken=e892dd46a0f722f7ec3cd416658afb21&method=auth.getMobileSession&sk=&username=wewek&api_sig=f3641eb151883a00559dd50572c1225f" )                                                                           
amarok(23376) KNetworkAccessManager::createRequest: GetOperation:  QUrl( "http://ws.audioscrobbler.com/2.0/?api_key=402d3ca8e9bc9d3cf9b85e1202944ca5&method=user.getNeighbours&sk=&user=wewek&api_sig=f6a7d1132275e26e6f1d62a05accf0ae" )                                                                 
amarok(23376) KNetworkAccessManager::createRequest: GetOperation:  QUrl( "http://ws.audioscrobbler.com/2.0/?api_key=402d3ca8e9bc9d3cf9b85e1202944ca5&method=user.getFriends&sk=&user=wewek&api_sig=73036c8421fecb83390c1be7acb4cbb6" )                                                                     
Couldn't resolve property: linearGradient5167                                                     
link XMLID_9_ hasn't been detected!                                                               
Couldn't resolve property: linearGradient3563                                                     
link XMLID_9_ hasn't been detected!                                                               
link XMLID_9_ hasn't been detected!                                                               
link XMLID_9_ hasn't been detected!
amarok(23376) MagnatuneConfig::load: load
wewek@napsugaram:~$ QDir::exists: Empty or null file name
QPainter::begin: Cannot paint on a null pixmap
QPainter::begin: Cannot paint on a null pixmap
QPainter::begin: Cannot paint on a null pixmap
QPainter::begin: Cannot paint on a null pixmap
QPainter::begin: Cannot paint on a null pixmap
amarok(23376) CurrentTrack::dataUpdated: CurrentTrack::dataUpdated
amarok(23376) CurrentTrack::dataUpdated: CurrentTrack::dataUpdated
amarok(23376) CurrentTrack::dataUpdated: CurrentTrack::dataUpdated
amarok(23376) CurrentTrack::dataUpdated: CurrentTrack::dataUpdated
amarok(23376) KNetworkReply::setMimeType: "text/xml"
":"
  QUrl( "" )
"

    Invalid method signature supplied"
amarok(23376) KNetworkReply::setMimeType: "text/xml"
amarok(23376) KNetworkReply::setMimeType: "text/xml"
QDir::exists: Empty or null file name


Console output (VLC):

$ vlc
VLC media player 0.9.9a Grishenko
[00000001] main libvlc debug: VLC media player - version 0.9.9a Grishenko - (c) 1996-2009 the VideoLAN team                                                                                           
[00000001] main libvlc debug: libvlc was configured with ./configure  '--build=x86_64-linux-gnu' '--enable-maintainer-mode' '--enable-release' '--prefix=/usr' '--enable-libtool' '--enable-fast-install' '--with-binary-version=2ubuntu1' '--disable-update-check' '--disable-gnome' '--disable-gtk' '--disable-familiar' '--disable-fb' '--enable-ggi' '--enable-sdl' '--enable-esd' '--enable-mad' '--enable-jack' '--enable-pulse' '--enable-lirc' '--enable-a52' '--enable-aa' '--enable-dvbpsi' '--enable-mozilla' '--with-mozilla-pkg=libxul-plugin' '--disable-kde' '--enable-mp4' '--enable-dvb' '--disable-satellite' '--enable-ogg' '--enable-vorbis' '--enable-shout' '--enable-qt4' '--disable-slp' '--enable-flac' '--disable-skins' '--disable-basic-skins' '--enable-skins2' '--enable-freetype' '--enable-mkv''--enable-speex' '--enable-caca' '--enable-live555' '--enable-libmpeg2' '--enable-fribidi' '--enable-cdio' '--enable-mod' '--enable-theora' '--enable-modplug' '--enable-dvdnav' '--enable-gnutls' '--enable-ffmpeg' '--enable-ncurses' '--enable-smb' '--disable-gnomevfs' '--enable-bonjour' '--enable-mpc' '--enable-vcd' '--enable-vcdx' '--enable-notify' '--enable-twolame' '--enable-faad' '--disable-zvbi' '--enable-telx' '--enable-mediacontrol-bindings' '--disable-atmo' '--enable-taglib' '--enable-libass' '--enable-libdca' '--enable-realrtsp' '--disable-dv' '--enable-x264' '--enable-alsa' '--enable-v4l' '--enable-v4l2' '--enable-pvr' '--enable-svgalib' '--enable-dvd' '--without-dvdcss' 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2' 'LDFLAGS=-Wl,--as-needed' 'CPPFLAGS=' 'CXXFLAGS=-g -O2'
[00000001] main libvlc debug: translation test: code is "C"
[00000001] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
[????????] x11 video output error: X11 request 42.0 failed with error code 8:
BadMatch (invalid parameter attributes)
[00000429] avcodec decoder error: more than 5 seconds of late video -> dropping frame (computer tooslow ?)
[00000429] avcodec decoder error: more than 5 seconds of late video -> dropping frame (computer tooslow ?)


Comment:
[00000429] avcodec decoder error: more than 5 seconds of late video -> dropping frame (computer tooslow ?) -> this happens when Amarok is opened and VLC is playing (.avi)