Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.30.5-43.fc11.i586 i686
Distribution: "Fedora release 11 (Leonidas)"

What I was doing when the application crashed:
Clicked on a bz2 file in konqueror.  It launched in ark and plasma crashed

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb6e8c7a0 (LWP 2044))]

Thread 2 (Thread 0xabdcdb70 (LWP 2047)):
#0  0x00d05422 in __kernel_vsyscall ()
#1  0x00490fa5 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S:122
#2  0x06d41337 in QWaitConditionPrivate::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:87
#3  QWaitCondition::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:159
#4  0x070664d2 in QHostInfoAgent::run (this=0x9d09490) at kernel/qhostinfo.cpp:260
#5  0x06d402f2 in QThreadPrivate::start (arg=0x9d09490) at thread/qthread_unix.cpp:188
#6  0x0048c935 in start_thread (arg=0xabdcdb70) at pthread_create.c:297
#7  0x01c8494e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb6e8c7a0 (LWP 2044)):
[KCrash Handler]
#6  0x0494831a in QGraphicsLayoutItem::isLayout (this=0x9b488f0) at graphicsview/qgraphicslayoutitem.cpp:784
#7  0x0494716d in QGraphicsLayoutPrivate::activateRecursive (this=0x9b488f0, item=0x9be5f00) at graphicsview/qgraphicslayout_p.cpp:189
#8  0x0494716d in QGraphicsLayoutPrivate::activateRecursive (this=0x9b488f0, item=0x99941b0) at graphicsview/qgraphicslayout_p.cpp:189
#9  0x04946956 in QGraphicsLayout::activate (this=0x99941b0) at graphicsview/qgraphicslayout.cpp:258
#10 0x04946a2c in QGraphicsLayout::widgetEvent (this=0x99941b0, e=0x9ec2c10) at graphicsview/qgraphicslayout.cpp:366
#11 0x0494cbb6 in QGraphicsWidget::event (this=0x9b499a8, event=0x9ec2c10) at graphicsview/qgraphicswidget.cpp:1262
#12 0x042f5974 in QApplicationPrivate::notify_helper (this=0x96b4da0, receiver=0x9b499a8, e=0x9ec2c10) at kernel/qapplication.cpp:4056
#13 0x042fd0e9 in QApplication::notify (this=0x969c4c0, receiver=0x9b499a8, e=0x9ec2c10) at kernel/qapplication.cpp:3603
#14 0x00feb60a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#15 0x06e30b0b in QCoreApplication::notifyInternal (this=0x969c4c0, receiver=0x9b499a8, event=0x9ec2c10) at kernel/qcoreapplication.cpp:610
#16 0x06e31732 in QCoreApplication::sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:213
#17 QCoreApplicationPrivate::sendPostedEvents (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.cpp:1247
#18 0x06e318ed in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#19 0x06e5b9bf in QCoreApplication::sendPostedEvents () at kernel/qcoreapplication.h:218
#20 postEventSourceDispatch () at kernel/qeventdispatcher_glib.cpp:210
#21 0x032f6308 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#22 0x032f99e0 in ?? () from /lib/libglib-2.0.so.0
#23 0x032f9b13 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#24 0x06e5b5ec in QEventDispatcherGlib::processEvents (this=0x96872c8, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#25 0x04394cb5 in QGuiEventDispatcherGlib::processEvents (this=0x96872c8, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#26 0x06e2f0d9 in QEventLoop::processEvents (this=0xbfe774e4, flags={i = 36}) at kernel/qeventloop.cpp:149
#27 0x06e2f52a in QEventLoop::exec (this=0xbfe774e4, flags={i = 0}) at kernel/qeventloop.cpp:201
#28 0x06e319af in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#29 0x042f57f7 in QApplication::exec () at kernel/qapplication.cpp:3525
#30 0x001ca36d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#31 0x080486fb in _start ()

Reported using DrKonqi