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: 4.5.2
Operating System: Linux 2.6.30-ARCH i686

What I was doing when the application crashed:
sorry - none I can really give.  except this 3-star backtrace ;-)
Was using Konq at time of crash.  Also had running (but not open) kmail and akregator, shaman, vlc media player, amarok and dolphin.  nothing too stressful :-/

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 2471)]

Thread 2 (Thread 0xa8c07b70 (LWP 2475)):
#0  0xb80de424 in __kernel_vsyscall ()
#1  0xb7e75bc5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb7ed4047 in QWaitCondition::wait (this=0x98ec258, mutex=0x98ec254, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#3  0xb6694bd2 in QHostInfoAgent::run (this=0x98ec248) at kernel/qhostinfo.cpp:260
#4  0xb7ed3032 in QThreadPrivate::start (arg=0x98ec248) at thread/qthread_unix.cpp:188
#5  0xb7e7168c in start_thread () from /lib/libpthread.so.0
#6  0xb6911e2e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb5f0a710 (LWP 2471)):
[KCrash Handler]
#6  0xb78e648a in KDirModel::dirLister (this=0x9a065b0) at /home/jan/kdemod/testing/kdelibs/src/kdelibs-4.2.96/kio/kio/kdirmodel.cpp:354
#7  0xb48e478e in KFilePreviewGenerator::qt_metacall (this=0x99e96f0, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbff6ec9c)
    at /home/jan/kdemod/testing/kdelibs/src/build/kfile/kfilepreviewgenerator.moc:89
#8  0xb7fd798c in QMetaObject::activate (sender=0x95867c0, from_signal_index=<value optimized out>, to_signal_index=7, argv=0x2) at kernel/qobject.cpp:3112
#9  0xb7fd85c2 in QMetaObject::activate (sender=0x95867c0, m=0xb7401368, local_signal_index=3, argv=0x0) at kernel/qobject.cpp:3186
#10 0xb7218ef7 in QClipboard::dataChanged (this=0x95867c0) at .moc/release-shared/moc_qclipboard.cpp:108
#11 0xb6c10672 in QApplication::x11ProcessEvent (this=0x9543198, event=0xbff70190) at kernel/qapplication_x11.cpp:3384
#12 0xb6c3abe2 in x11EventSourceDispatch (s=0x9568a00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#13 0xb67a6d98 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#14 0xb67aa3e0 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#15 0xb67aa513 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#16 0xb7fec6ac in QEventDispatcherGlib::processEvents (this=0x9565938, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#17 0xb6c3a315 in QGuiEventDispatcherGlib::processEvents (this=0x9565938, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#18 0xb7fc0559 in QEventLoop::processEvents (this=0xbff70484, flags=) at kernel/qeventloop.cpp:149
#19 0xb7fc09aa in QEventLoop::exec (this=0xbff70484, flags={i = 0}) at kernel/qeventloop.cpp:201
#20 0xb7fc2e1f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#21 0xb6b9c517 in QApplication::exec () at kernel/qapplication.cpp:3525
#22 0xb49f2b0d in kdemain (argc=1, argv=0x95201d8) at /home/jan/kdemod/testing/kdebase-workspace/src/kdebase-workspace-4.2.96/plasma/shells/desktop/main.cpp:50
#23 0x0804de42 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x94d65f8 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8050f4b "0") at /home/jan/kdemod/testing/kdelibs/src/kdelibs-4.2.96/kinit/kinit.cpp:676
#24 0x0804e9ad in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at /home/jan/kdemod/testing/kdelibs/src/kdelibs-4.2.96/kinit/kinit.cpp:1168
#25 0x0804ee44 in handle_requests (waitForPid=<value optimized out>) at /home/jan/kdemod/testing/kdelibs/src/kdelibs-4.2.96/kinit/kinit.cpp:1361
#26 0x0804f63f in main (argc=2, argv=0xbff70da4, envp=0xbff70db0) at /home/jan/kdemod/testing/kdelibs/src/kdelibs-4.2.96/kinit/kinit.cpp:1788

Reported using DrKonqi