Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.96 (KDE 4.2.96 (KDE 4.3 RC2))
Qt Version: 4.5.1
Operating System: Linux 2.6.28-13-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Clicked in opendesktop.org-Plasmoid on Nearby --> Contact --> User Details and then on the "Home-Button" (to get my own Details back). --> Workspace crashed at clicking on the Home-Button.

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

Thread 3 (Thread 0xa81c1b90 (LWP 3686)):
#0  0xb80d4430 in __kernel_vsyscall ()
#1  0xb65ca0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb67aa2ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7ed35b2 in QWaitCondition::wait (this=0x8a9dac0, mutex=0x8a9dabc, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7816ae2 in QHostInfoAgent::run (this=0x8a9dab0) at kernel/qhostinfo.cpp:260
#5  0xb7ed256e in QThreadPrivate::start (arg=0x8a9dab0) at thread/qthread_unix.cpp:189
#6  0xb65c64ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb679b49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa57b3b90 (LWP 5692)):
#0  0xb80d4430 in __kernel_vsyscall ()
#1  0xb65ca412 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb67aa344 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7ed358c in QWaitCondition::wait (this=0x913b500, mutex=0x913b4fc, time=30000) at thread/qwaitcondition_unix.cpp:85
#4  0xb7ec8ac6 in QThreadPoolThread::run (this=0x9124818) at concurrent/qthreadpool.cpp:140
#5  0xb7ed256e in QThreadPrivate::start (arg=0x9124818) at thread/qthread_unix.cpp:189
#6  0xb65c64ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb679b49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb60d4a10 (LWP 3685)):
[KCrash Handler]
#6  QGraphicsItemPrivate::updateCachedClipPathFromSetPosHelper (this=0x9522da8, newPos=@0xbfaeff60) at graphicsview/qgraphicsitem.cpp:3891
#7  0xb709f1a5 in QGraphicsItemPrivate::setPosHelper (this=0x9522da8, pos=@0xbfaf00c0) at graphicsview/qgraphicsitem.cpp:2367
#8  0xb70e9f18 in QGraphicsWidget::setGeometry (this=0x92e0568, rect=@0xbfaf01e0) at graphicsview/qgraphicswidget.cpp:382
#9  0xb70f13db in QGridLayoutItem::setGeometry (this=0x94d1b20, rect=@0xbfaf01e0) at graphicsview/qgridlayoutengine.cpp:650
#10 0xb70f73e2 in QGridLayoutEngine::setGeometries (this=0x8a01278, styleInfo=@0xbfaf026c, contentsGeometry=@0xbfaf0248) at graphicsview/qgridlayoutengine.cpp:1030
#11 0xb70e5a54 in QGraphicsLinearLayout::setGeometry (this=0x89f8a18, rect=@0xbfaf02c8) at graphicsview/qgraphicslinearlayout.cpp:503
#12 0xb70e2aef in QGraphicsLayout::activate (this=0x89f8a18) at graphicsview/qgraphicslayout.cpp:269
#13 0xb70e2b6c in QGraphicsLayout::widgetEvent (this=0x89f8a18, e=0x927eff0) at graphicsview/qgraphicslayout.cpp:366
#14 0xb70e9213 in QGraphicsWidget::event (this=0x894d980, event=0x927eff0) at graphicsview/qgraphicswidget.cpp:1262
#15 0xb6a60bcc in QApplicationPrivate::notify_helper (this=0x83de8e0, receiver=0x894d980, e=0x927eff0) at kernel/qapplication.cpp:4057
#16 0xb6a68ede in QApplication::notify (this=0x83d8dd0, receiver=0x894d980, e=0x927eff0) at kernel/qapplication.cpp:3604
#17 0xb759a4dd in KApplication::notify (this=0x83d8dd0, receiver=0x894d980, event=0x927eff0) at /build/buildd/kde4libs-4.2.96/kdeui/kernel/kapplication.cpp:302
#18 0xb7fc67ab in QCoreApplication::notifyInternal (this=0x83d8dd0, receiver=0x894d980, event=0x927eff0) at kernel/qcoreapplication.cpp:610
#19 0xb7fc7405 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8360b38) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 0xb7fc75fd in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#21 0xb7ff258f in postEventSourceDispatch (s=0x83e0910) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#22 0xb6613b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#23 0xb66170eb in ?? () from /usr/lib/libglib-2.0.so.0
#24 0xb6617268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#25 0xb7ff21d8 in QEventDispatcherGlib::processEvents (this=0x83de5f8, flags={i = -1079048024}) at kernel/qeventdispatcher_glib.cpp:324
#26 0xb6b02765 in QGuiEventDispatcherGlib::processEvents (this=0x83de5f8, flags={i = -1079047976}) at kernel/qguieventdispatcher_glib.cpp:202
#27 0xb7fc4dda in QEventLoop::processEvents (this=0xbfaf0950, flags={i = -1079047912}) at kernel/qeventloop.cpp:149
#28 0xb7fc521a in QEventLoop::exec (this=0xbfaf0950, flags={i = -1079047848}) at kernel/qeventloop.cpp:200
#29 0xb7fc76c9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#30 0xb6a60a47 in QApplication::exec () at kernel/qapplication.cpp:3526
#31 0xb3c9b5d0 in kdemain (argc=1, argv=0x83c6060) at /build/buildd/kdebase-workspace-4.2.96/plasma/shells/desktop/main.cpp:50
#32 0x0804e27d in launch (argc=1, _name=0x836157c "/usr/bin/plasma-desktop", args=0x8361594 "", cwd=0x0, envc=0, envs=0x8361598 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051391 "0") at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:676
#33 0x0804ea5d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1168
#34 0x0804efe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1361
#35 0x0804fbca in main (argc=2, argv=0xbfaf1144, envp=0xbfaf1150) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1788

Reported using DrKonqi