Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.95 (KDE 4.2.95 (KDE 4.3 RC1))
Qt Version: 4.5.0
Operating System: Linux 2.6.28-13-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
crash after clicking on a task in the taskbar

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3685)]

Thread 2 (Thread 0xa59e7b90 (LWP 3720)):
#0  0xb8025430 in __kernel_vsyscall ()
#1  0xb64f20e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb66d22ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e249b2 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#4  0xb7761152 in ?? () from /usr/lib/libQtNetwork.so.4
#5  0xb7e2396e in ?? () from /usr/lib/libQtCore.so.4
#6  0xb64ee4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb66c349e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5ffb700 (LWP 3685)):
[KCrash Handler]
#6  0x070000c3 in ?? ()
#7  0xb5d5d9ba in Plasma::Animator::timerEvent () from /usr/lib/libplasma.so.3
#8  0xb7f2815f in QObject::event () from /usr/lib/libQtCore.so.4
#9  0xb69a8e9c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#10 0xb69b119e in QApplication::notify () from /usr/lib/libQtGui.so.4
#11 0xb74e23dd in KApplication::notify () from /usr/lib/libkdeui.so.5
#12 0xb7f17a3b in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#13 0xb7f46d71 in ?? () from /usr/lib/libQtCore.so.4
#14 0xb7f434e0 in ?? () from /usr/lib/libQtCore.so.4
#15 0xb653ab88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#16 0xb653e0eb in ?? () from /usr/lib/libglib-2.0.so.0
#17 0xb653e268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#18 0xb7f43438 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#19 0xb6a4a365 in ?? () from /usr/lib/libQtGui.so.4
#20 0xb7f1606a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#21 0xb7f164aa in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#22 0xb7f18959 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#23 0xb69a8d17 in QApplication::exec () from /usr/lib/libQtGui.so.4
#24 0xb3d80510 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#25 0x0804e1c0 in _start ()

Reported using DrKonqi