Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-15-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
start KPackageKit to search Gimp; choose it and click on "list on files"-window
at this moment it looks like the desktop was completely new paint and error message from kde bug assistent let me know, that a segmentation fault of plasma desktop was happend

 -- Backtrace:
Application: Plasma-Arbeitsfläche (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb775f700 (LWP 1426))]

Thread 2 (Thread 0xab6bab70 (LWP 1428)):
#0  0x00b13422 in __kernel_vsyscall ()
#1  0x008eee15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00a4a78d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x0024ee67 in QWaitConditionPrivate::wait (this=0x85c8890, mutex=0x85c888c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x85c8890, mutex=0x85c888c, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x04859922 in QHostInfoAgent::run (this=0x85c8880) at kernel/qhostinfo.cpp:260
#6  0x0024de32 in QThreadPrivate::start (arg=0x85c8880) at thread/qthread_unix.cpp:188
#7  0x008ea80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x00a3d7ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb775f700 (LWP 1426)):
[KCrash Handler]
#6  0x006a1d57 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
#7  0x02c7e70e in qt_x11_getX11InfoForWindow (xinfo=0x8baa02c, a=...) at kernel/qwidget_x11.cpp:400
#8  0x02c85b4e in QWidgetPrivate::create_sys (this=0x8ba9f38, window=16868199, initializeWindow=true, destroyOldWindow=true) at kernel/qwidget_x11.cpp:545
#9  0x02c46b1c in QWidget::create (this=0x8d2bbd0, window=16868199, initializeWindow=true, destroyOldWindow=<value optimized out>) at kernel/qwidget.cpp:1253
#10 0x04589c1e in SystemTray::X11EmbedContainer::embedSystemTrayClient (this=0x8d2bbd0, clientId=54526608) at ../../../../plasma/applets/systemtray/protocols/fdo/x11embedcontainer.cpp:110
#11 0x045853f0 in SystemTray::FdoGraphicsWidget::setupXEmbedDelegate (this=0x8ba4ec8) at ../../../../plasma/applets/systemtray/protocols/fdo/fdographicswidget.cpp:159
#12 0x045854cb in SystemTray::FdoGraphicsWidget::qt_metacall (this=0x8ba4ec8, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbf94bebc) at ./fdographicswidget.moc:78
#13 0x00354263 in QMetaObject::activate (sender=0x8fdb568, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#14 0x00354ec2 in QMetaObject::activate (sender=0x8fdb568, m=0x42e908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#15 0x00359387 in QSingleShotTimer::timeout (this=0x8fdb568) at .moc/release-shared/qtimer.moc:76
#16 0x0035949c in QSingleShotTimer::timerEvent (this=0x8fdb568) at kernel/qtimer.cpp:298
#17 0x0034e3bf in QObject::event (this=0x8fdb568, e=0xbf94c350) at kernel/qobject.cpp:1075
#18 0x02beff54 in QApplicationPrivate::notify_helper (this=0x8294d20, receiver=0x8fdb568, e=0xbf94c350) at kernel/qapplication.cpp:4056
#19 0x02bf767c in QApplication::notify (this=0x826de68, receiver=0x8fdb568, e=0xbf94c350) at kernel/qapplication.cpp:3603
#20 0x00f6abfa in KApplication::notify (this=0x826de68, receiver=0x8fdb568, event=0xbf94c350) at ../../kdeui/kernel/kapplication.cpp:302
#21 0x0033e6cb in QCoreApplication::notifyInternal (this=0x826de68, receiver=0x8fdb568, event=0xbf94c350) at kernel/qcoreapplication.cpp:610
#22 0x0036b7ce in QCoreApplication::sendEvent (this=0x8297934) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#23 QTimerInfoList::activateTimers (this=0x8297934) at kernel/qeventdispatcher_unix.cpp:572
#24 0x003690e0 in timerSourceDispatch (source=0x8297900) at kernel/qeventdispatcher_glib.cpp:165
#25 0x0016de78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#26 0x00171720 in ?? () from /lib/libglib-2.0.so.0
#27 0x00171853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#28 0x0036902c in QEventDispatcherGlib::processEvents (this=0x8294ae0, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#29 0x02c90be5 in QGuiEventDispatcherGlib::processEvents (this=0x8294ae0, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#30 0x0033cc79 in QEventLoop::processEvents (this=0xbf94c614, flags=) at kernel/qeventloop.cpp:149
#31 0x0033d0ca in QEventLoop::exec (this=0xbf94c614, flags=...) at kernel/qeventloop.cpp:201
#32 0x0033f53f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#33 0x02befdd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#34 0x022c680d in kdemain (argc=1, argv=0x824e7f0) at ../../../../plasma/shells/desktop/main.cpp:50
#35 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x8235a40 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#36 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#37 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#38 0x0804fbaf in main (argc=2, argv=0xbf94ce74, envp=0xbf94ce80) at ../../kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 215244

Reported using DrKonqi