Application: plasma-desktop (0.3)
KDE Platform Version: 4.3.85 (KDE 4.3.85 (KDE 4.4 Beta2)) "release 203"
Qt Version: 4.6.0
Operating System: Linux 2.6.31.5-0.1-default x86_64
Distribution: "openSUSE 11.2 (x86_64)"

-- Information about the crash:
this happen when I tried foward a message in Kmail, the apps freeze and plasma Crash, this happen in another occations, I installed the debug rpm i found in the opensuse repo for kmail, I wait this backtrace will be useful to get a better kmail.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fc2371e27f0 (LWP 3108))]

Thread 6 (Thread 0x7fc215fb0910 (LWP 3109)):
#0  0x00007fc235498049 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fc23572366b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007fc233ef73ec in QHostInfoAgent::run (this=0xa48be0) at kernel/qhostinfo.cpp:252
#3  0x00007fc2357226b5 in ?? () from /usr/lib64/libQtCore.so.4
#4  0x00007fc23549365d in start_thread () from /lib64/libpthread.so.0
#5  0x00007fc23426814d in clone () from /lib64/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fc20e40a910 (LWP 3590)):
#0  0x00007fc235498049 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fc23572366b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007fc22bd65826 in ?? () from /usr/lib64/libthreadweaver.so.4
#3  0x00007fc22bd67edb in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007fc22bd67ef4 in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007fc22bd6638f in ?? () from /usr/lib64/libthreadweaver.so.4
#6  0x00007fc22bd667e8 in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#7  0x00007fc2357226b5 in ?? () from /usr/lib64/libQtCore.so.4
#8  0x00007fc23549365d in start_thread () from /lib64/libpthread.so.0
#9  0x00007fc23426814d in clone () from /lib64/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fc20dc09910 (LWP 3591)):
#0  0x00007fc235498049 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fc23572366b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007fc22bd65826 in ?? () from /usr/lib64/libthreadweaver.so.4
#3  0x00007fc22bd67edb in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007fc22bd6638f in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007fc22bd667e8 in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#6  0x00007fc2357226b5 in ?? () from /usr/lib64/libQtCore.so.4
#7  0x00007fc23549365d in start_thread () from /lib64/libpthread.so.0
#8  0x00007fc23426814d in clone () from /lib64/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fc20d408910 (LWP 3592)):
#0  0x00007fc235498049 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fc23572366b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007fc22bd65826 in ?? () from /usr/lib64/libthreadweaver.so.4
#3  0x00007fc22bd67edb in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007fc22bd67ef4 in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007fc22bd6638f in ?? () from /usr/lib64/libthreadweaver.so.4
#6  0x00007fc22bd667e8 in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#7  0x00007fc2357226b5 in ?? () from /usr/lib64/libQtCore.so.4
#8  0x00007fc23549365d in start_thread () from /lib64/libpthread.so.0
#9  0x00007fc23426814d in clone () from /lib64/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fc20cc07910 (LWP 3593)):
#0  0x00007fc235498049 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fc23572366b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007fc22bd65826 in ?? () from /usr/lib64/libthreadweaver.so.4
#3  0x00007fc22bd67edb in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007fc22bd6638f in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007fc22bd667e8 in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#6  0x00007fc2357226b5 in ?? () from /usr/lib64/libQtCore.so.4
#7  0x00007fc23549365d in start_thread () from /lib64/libpthread.so.0
#8  0x00007fc23426814d in clone () from /lib64/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fc2371e27f0 (LWP 3108)):
[KCrash Handler]
#5  QGraphicsScenePrivate::processDirtyItemsRecursive (this=0x787cf0, item=0x1c1d020, dirtyAncestorContainsChildren=false, parentOpacity=0) at graphicsview/qgraphicsscene.cpp:4895
#6  0x00007fc234fde55d in QGraphicsScenePrivate::_q_processDirtyItems (this=0x787cf0) at graphicsview/qgraphicsscene.cpp:466
#7  0x00007fc234fdeba2 in QGraphicsScene::qt_metacall (this=0x714450, _c=InvokeMetaMethod, _id=<value optimized out>, _a=0x219fed0) at .moc/release-shared/moc_qgraphicsscene.cpp:130
#8  0x00007fc22d8ac505 in Plasma::Corona::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libplasma.so.3
#9  0x00007fc22a0d68b3 in KDialog::setButtons(QFlags<KDialog::ButtonCode>) () from /usr/lib64/libkdeinit4_plasma-desktop.so
#10 0x00007fc235825209 in QObject::event(QEvent*) () from /usr/lib64/libQtCore.so.4
#11 0x00007fc234fdabb0 in QGraphicsScene::event (this=0x714450, event=0x2175a60) at graphicsview/qgraphicsscene.cpp:3450
#12 0x00007fc2349bdbcc in QApplicationPrivate::notify_helper (this=0x66e5a0, receiver=0x714450, e=0x2175a60) at kernel/qapplication.cpp:4242
#13 0x00007fc2349c41ed in QApplication::notify (this=0x6618c0, receiver=0x714450, e=0x2175a60) at kernel/qapplication.cpp:4125
#14 0x00007fc235d3fa76 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#15 0x00007fc23581553c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#16 0x00007fc235817cb7 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQtCore.so.4
#17 0x00007fc23583efd3 in ?? () from /usr/lib64/libQtCore.so.4
#18 0x00007fc230a8bdde in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#19 0x00007fc230a8f7a8 in ?? () from /usr/lib64/libglib-2.0.so.0
#20 0x00007fc230a8f8d0 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#21 0x00007fc23583eb13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#22 0x00007fc234a6a94e in QGuiEventDispatcherGlib::processEvents (this=0x787cf0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#23 0x00007fc235813e52 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#24 0x00007fc23581422c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#25 0x00007fc235817f7b in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#26 0x00007fc22a0ddad2 in kdemain () from /usr/lib64/libkdeinit4_plasma-desktop.so
#27 0x0000000000406fc8 in _start ()

Reported using DrKonqi