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 2.6.31-17-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
The plasma crash seemed to happen when I made the search in KPackageKit.
I also had firefox running two windows, one with one tab and the other with 3 tabs.

Both KPackageKit and Firefox survieved.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77e0700 (LWP 1739))]

Thread 2 (Thread 0xab818b70 (LWP 1742)):
#0  0x00d79422 in __kernel_vsyscall ()
#1  0x0013ee15 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x00c8587d in __pthread_cond_wait (cond=0x9720b60, mutex=0x9720b48) at forward.c:139
#3  0x0045ee67 in QWaitConditionPrivate::wait (this=0x971b5c0, mutex=0x971b5bc, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x971b5c0, mutex=0x971b5bc, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x016a0922 in QHostInfoAgent::run (this=0x971b5b0) at kernel/qhostinfo.cpp:260
#6  0x0045de32 in QThreadPrivate::start (arg=0x971b5b0) at thread/qthread_unix.cpp:188
#7  0x0013a80e in start_thread (arg=0xab818b70) at pthread_create.c:300
#8  0x00c788de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb77e0700 (LWP 1739)):
[KCrash Handler]
#6  0x001f2d57 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
#7  0x0756470e in qt_x11_getX11InfoForWindow (xinfo=0x9f70014, a=...) at kernel/qwidget_x11.cpp:400
#8  0x0756bb4e in QWidgetPrivate::create_sys (this=0x9f6ff20, window=16796314, initializeWindow=true, destroyOldWindow=true) at kernel/qwidget_x11.cpp:545
#9  0x0752cb1c in QWidget::create (this=0x9f6f690, window=16796314, initializeWindow=true, destroyOldWindow=<value optimized out>) at kernel/qwidget.cpp:1253
#10 0x01790c1e in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#11 0x0178c3f0 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#12 0x0178c4cb in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#13 0x00564263 in QMetaObject::activate (sender=0x9f522a8, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#14 0x00564ec2 in QMetaObject::activate (sender=0x9f522a8, m=0x63e908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#15 0x00569387 in QSingleShotTimer::timeout (this=0x9f522a8) at .moc/release-shared/qtimer.moc:76
#16 0x0056949c in QSingleShotTimer::timerEvent (this=0x9f522a8) at kernel/qtimer.cpp:298
#17 0x0055e3bf in QObject::event (this=0x9f522a8, e=0xbfe80d40) at kernel/qobject.cpp:1075
#18 0x074d5f54 in QApplicationPrivate::notify_helper (this=0x9058f30, receiver=0x9f522a8, e=0xbfe80d40) at kernel/qapplication.cpp:4056
#19 0x074dd67c in QApplication::notify (this=0x9032118, receiver=0x9f522a8, e=0xbfe80d40) at kernel/qapplication.cpp:3603
#20 0x010b4bfa in KApplication::notify (this=0x9032118, receiver=0x9f522a8, event=0xbfe80d40) at ../../kdeui/kernel/kapplication.cpp:302
#21 0x0054e6cb in QCoreApplication::notifyInternal (this=0x9032118, receiver=0x9f522a8, event=0xbfe80d40) at kernel/qcoreapplication.cpp:610
#22 0x0057b7ce in QCoreApplication::sendEvent (this=0x905bb34) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#23 QTimerInfoList::activateTimers (this=0x905bb34) at kernel/qeventdispatcher_unix.cpp:572
#24 0x005790e0 in timerSourceDispatch (source=0x905bb00) at kernel/qeventdispatcher_glib.cpp:165
#25 0x00db2e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#26 0x00db6730 in ?? () from /lib/libglib-2.0.so.0
#27 0x00db6863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#28 0x0057902c in QEventDispatcherGlib::processEvents (this=0x9058cf0, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#29 0x07576be5 in QGuiEventDispatcherGlib::processEvents (this=0x9058cf0, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#30 0x0054cc79 in QEventLoop::processEvents (this=0xbfe81004, flags=) at kernel/qeventloop.cpp:149
#31 0x0054d0ca in QEventLoop::exec (this=0xbfe81004, flags=...) at kernel/qeventloop.cpp:201
#32 0x0054f53f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#33 0x074d5dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#34 0x0422e80d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#35 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x9000a20 "", 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=0xbfe81864, envp=0xbfe81870) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi