Title: Plasma crashed when starting Firefox

What I was doing when the application crashed:
Firefox 3.0.10
Crashing at first start after logging in kde

 -- Application and System information:
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: 4.5.0
Operating System: Linux 2.6.29-ARCH x86_64

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 0 (LWP 15473)]

Thread 3 (Thread 0x7fa12b37c950 (LWP 15474)):
#0  0x00007fa145ab4d69 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fa145d25d19 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#2  0x00007fa1494fbe1c in ?? () from /usr/lib/libQtNetwork.so.4
#3  0x00007fa145d24d22 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fa145ab0fc7 in start_thread () from /lib/libpthread.so.0
#5  0x00007fa14507f5dd in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fa129294950 (LWP 15475)):
#0  0xffffffffff6001a7 in ?? ()
#1  0x00007fff52dfe5fb in ?? ()
#2  0x00007fa141b30f6f in clock_gettime () from /lib/librt.so.1
#3  0x00007fa145e382ed in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fa145e384e1 in ?? () from /usr/lib/libQtCore.so.4
#5  0x00007fa145e3a3f3 in ?? () from /usr/lib/libQtCore.so.4
#6  0x00007fa145e369ac in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007fa1418a5fe2 in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#8  0x00007fa1418a63ff in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#9  0x00007fa1418a687c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#10 0x00007fa145e367fe in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#11 0x00007fa145e0ba32 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#12 0x00007fa145e0bdfd in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#13 0x00007fa149923dfc in KIO::NetAccess::enter_loop () from /usr/lib/libkio.so.5
#14 0x00007fa149924436 in KIO::NetAccess::synchronousRunInternal () from /usr/lib/libkio.so.5
#15 0x00007fa149924a6e in KIO::NetAccess::synchronousRun () from /usr/lib/libkio.so.5
#16 0x00007fa12bbd24a4 in Update_Thread::downloadFile () from /usr/lib/kde4/plasma_applet_cwp.so
#17 0x00007fa12bbdd6b8 in Update_Thread::collectAndParseData () from /usr/lib/kde4/plasma_applet_cwp.so
#18 0x00007fa12bbde4dc in Update_Thread::run () from /usr/lib/kde4/plasma_applet_cwp.so
#19 0x00007fa145d24d22 in ?? () from /usr/lib/libQtCore.so.4
#20 0x00007fa145ab0fc7 in start_thread () from /lib/libpthread.so.0
#21 0x00007fa14507f5dd in clone () from /lib/libc.so.6
#22 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa14ab3c790 (LWP 15473)):
[KCrash Handler]
#5  0x00007fa12d2ec850 in TaskManager::Task::window () from /usr/lib/libtaskmanager.so.4
#6  0x00007fa12cd24b43 in AbstractTaskItem::timerEvent () from /usr/lib/kde4/plasma_applet_tasks.so
#7  0x00007fa145e1ce43 in QObject::event () from /usr/lib/libQtCore.so.4
#8  0x00007fa146b280fb in QGraphicsWidget::event () from /usr/lib/libQtGui.so.4
#9  0x00007fa14651570d in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#10 0x00007fa14651d8fa in QApplication::notify () from /usr/lib/libQtGui.so.4
#11 0x00007fa148e38cfb in KApplication::notify () from /usr/lib/libkdeui.so.5
#12 0x00007fa145e0d18c in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#13 0x00007fa145e3a356 in ?? () from /usr/lib/libQtCore.so.4
#14 0x00007fa145e3687d in ?? () from /usr/lib/libQtCore.so.4
#15 0x00007fa1418a301a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#16 0x00007fa1418a66e0 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#17 0x00007fa1418a687c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#18 0x00007fa145e367df in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#19 0x00007fa1465ac74f in ?? () from /usr/lib/libQtGui.so.4
#20 0x00007fa145e0ba32 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#21 0x00007fa145e0bdfd in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#22 0x00007fa145e0e0c4 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#23 0x00007fa14a81b8bb in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#24 0x00007fa144fce546 in __libc_start_main () from /lib/libc.so.6
#25 0x0000000000400809 in _start ()