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:
I was reading email in thunderbird. I received a kpackagekit notification that some security updates were  available. I reviewed the updates and asked them to be applied. I was informed by Kpackagekit that it could not obtain an exclusive lock to the package database. Soon afterwards I received a message that there a plasma crash of some sort. Cannot decided whether it was Kpackagekit or Thunderbird which was directly involved.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77f9700 (LWP 1478))]

Thread 2 (Thread 0xac73bb70 (LWP 1493)):
#0  0x00542422 in __kernel_vsyscall ()
#1  0x004a0e15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00cf687d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x0015fe67 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#4  0x0737d922 in ?? () from /usr/lib/libQtNetwork.so.4
#5  0x0015ee32 in ?? () from /usr/lib/libQtCore.so.4
#6  0x0049c80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x00ce98de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb77f9700 (LWP 1478)):
[KCrash Handler]
#6  0x0036ad57 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
#7  0x02b8370e in ?? () from /usr/lib/libQtGui.so.4
#8  0x02b8ab4e in QWidgetPrivate::create_sys(unsigned long, bool, bool) () from /usr/lib/libQtGui.so.4
#9  0x02b4bb1c in QWidget::create(unsigned long, bool, bool) () from /usr/lib/libQtGui.so.4
#10 0x019cac1e in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#11 0x019c63f0 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#12 0x019c64cb in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#13 0x00265263 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#14 0x00265ec2 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#15 0x0026a387 in ?? () from /usr/lib/libQtCore.so.4
#16 0x0026a49c in ?? () from /usr/lib/libQtCore.so.4
#17 0x0025f3bf in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#18 0x02af4f54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#19 0x02afc67c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x00f89bfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#21 0x0024f6cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#22 0x0027c7ce in ?? () from /usr/lib/libQtCore.so.4
#23 0x0027a0e0 in ?? () from /usr/lib/libQtCore.so.4
#24 0x007c3e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#25 0x007c7730 in ?? () from /lib/libglib-2.0.so.0
#26 0x007c7863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#27 0x0027a02c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#28 0x02b95be5 in ?? () from /usr/lib/libQtGui.so.4
#29 0x0024dc79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#30 0x0024e0ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#31 0x0025053f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#32 0x02af4dd7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#33 0x01e4780d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#34 0x0804dde1 in _start ()

This bug may be a duplicate of or related to bug 192814

Reported using DrKonqi