Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.71 (KDE 4.2.71 (KDE 4.3 >= 20090428))
Qt Version: 4.5.1
Operating System: Linux 2.6.28-gentoo-r5 i686

What I was doing when the application crashed:
Plasma crashed when I clicked the taskbar to change the active application.

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Aborted
[Current thread is 0 (LWP 28915)]

Thread 2 (Thread 0xa849fb90 (LWP 28916)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb674cbf5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb67c3322 in QWaitCondition::wait () from /usr/lib/qt4/libQtCore.so.4
#3  0xb79e3e6a in ?? () from /usr/lib/qt4/libQtNetwork.so.4
#4  0x086055f8 in ?? ()
#5  0x086055f4 in ?? ()
#6  0xffffffff in ?? ()
#7  0xb69a32d0 in ?? ()
#8  0xb6781694 in ?? () from /usr/lib/qt4/libQtCore.so.4
#9  0xa849f2f0 in ?? ()
#10 0xb8061c16 in ?? () from /lib/ld-linux.so.2
#11 0xb67c2590 in ?? () from /usr/lib/qt4/libQtCore.so.4
#12 0x086055e8 in ?? ()
#13 0x00000000 in ?? ()

Thread 1 (Thread 0xb4303730 (LWP 28915)):
[KCrash Handler]
#6  0xffffe424 in __kernel_vsyscall ()
#7  0xb650b670 in raise () from /lib/libc.so.6
#8  0xb650ceb8 in abort () from /lib/libc.so.6
#9  0xb67bb125 in qt_message_output () from /usr/lib/qt4/libQtCore.so.4
#10 0xb67bb1e7 in qFatal () from /usr/lib/qt4/libQtCore.so.4
#11 0xb67bb2a5 in qt_assert () from /usr/lib/qt4/libQtCore.so.4
#12 0xa8b82bf1 in KSharedPtr<TaskManager::Task>::operator-> (this=0xbfa6ec04) at /home/loacoon/Program-Files/KDE4/include/ksharedptr.h:126
#13 0xa8b8f807 in AbstractTaskItem::timerEvent (this=0x879a5f8, event=0xbfa6f0bc) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdebase/workspace/plasma/applets/tasks/abstracttaskitem.cpp:400
#14 0xb68b1e9f in QObject::event () from /usr/lib/qt4/libQtCore.so.4
#15 0xb70b8a0f in QGraphicsWidget::event () from /usr/lib/qt4/libQtGui.so.4
#16 0xb6ac457c in QApplicationPrivate::notify_helper () from /usr/lib/qt4/libQtGui.so.4
#17 0xb6acc05e in QApplication::notify () from /usr/lib/qt4/libQtGui.so.4
#18 0xb776b51d in KApplication::notify (this=0x806d238, receiver=0x879a5f8, event=0xbfa6f0bc) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/kdeui/kernel/kapplication.cpp:307
#19 0xb68a2b4b in QCoreApplication::notifyInternal () from /usr/lib/qt4/libQtCore.so.4
#20 0xb68cd8f1 in ?? () from /usr/lib/qt4/libQtCore.so.4
#21 0x0806d238 in ?? ()
#22 0x0879a5f8 in ?? ()
#23 0xbfa6f0bc in ?? ()
#24 0xb5395ff4 in ?? () from /usr/lib/libxcb.so.1
#25 0x0808bc80 in ?? ()
#26 0xb4303730 in ?? ()
#27 0xbfa6f078 in ?? ()
#28 0x0879a5f8 in ?? ()
#29 0x0808bc8c in ?? ()
#30 0xb5399ff4 in ?? () from /usr/lib/libxcb-xlib.so.0
#31 0x00032963 in ?? ()
#32 0x00000001 in ?? ()
#33 0x00000000 in ?? ()