Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.5 (KDE 4.3.5) "release 0"
Qt Version: 4.5.3
Operating System: Linux 2.6.31.12-0.2-desktop x86_64
Distribution: "openSUSE 11.2 (x86_64)"

What I was doing when the application crashed:
When returning from screensaver, the desktop slowed to halt and crashed with attached trace. 
This is the first time seeing this crash, but reporting still.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f561ac2c750 (LWP 4276))]

Thread 2 (Thread 0x7f55fae39910 (LWP 4279)):
#0  0x00007f561a3fe049 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f561a66e53b in wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f5616b3f9ec in QHostInfoAgent::run (this=0xd14490) at kernel/qhostinfo.cpp:260
#4  0x00007f561a66d485 in QThreadPrivate::start (arg=0xd14490) at thread/qthread_unix.cpp:188
#5  0x00007f561a3f965d in start_thread () from /lib64/libpthread.so.0
#6  0x00007f5617e04e1d in clone () from /lib64/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f561ac2c750 (LWP 4276)):
[KCrash Handler]
#5  0x00007f56123a61fb in Plasma::FrameSvg::setElementPrefix(QString const&) () from /usr/lib64/libplasma.so.3
#6  0x00007f55fd68e23b in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#7  0x00007f55fd68e52c in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#8  0x00007f55fd685620 in QListData::insert(int) () at tools/qlistdata.cpp:170
#9  0x00007f561a767fbc in QMetaObject::activate (sender=0x6753c0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x179ba86) at kernel/qobject.cpp:3113
#10 0x00007f56123e28f2 in Plasma::Theme::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libplasma.so.3
#11 0x00007f561a767fbc in QMetaObject::activate (sender=0x6e8ff0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x179ba86) at kernel/qobject.cpp:3113
#12 0x00007f56191a04fd in ?? () from /usr/lib64/libkdeui.so.5
#13 0x00007f56191354b6 in KApplication::x11EventFilter(_XEvent*) () from /usr/lib64/libkdeui.so.5
#14 0x00007f560e4c3657 in ?? () from /usr/lib64/libkdeinit4_plasma-desktop.so
#15 0x00007f5618595681 in qt_x11EventFilter (ev=0x7fff10dd2700) at kernel/qapplication_x11.cpp:377
#16 0x00007f56185a5d11 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff10dd2700) at kernel/qapplication_x11.cpp:3271
#17 0x00007f56185ceb6c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#18 0x00007f5617484dee in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#19 0x00007f56174887b8 in ?? () from /usr/lib64/libglib-2.0.so.0
#20 0x00007f56174888e0 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#21 0x00007f561a77b3a3 in QEventDispatcherGlib::processEvents (this=0x618810, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#22 0x00007f56185ce31e in QGuiEventDispatcherGlib::processEvents (this=0x50, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#23 0x00007f561a751712 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#24 0x00007f561a751ae4 in QEventLoop::exec (this=0x7fff10dd2a30, flags=) at kernel/qeventloop.cpp:201
#25 0x00007f561a753c99 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#26 0x00007f560e4afe3f in kdemain () from /usr/lib64/libkdeinit4_plasma-desktop.so
#27 0x0000000000406f88 in _start ()

Reported using DrKonqi