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 2.6.31-9-generic x86_64
Distribution: Ubuntu karmic (development branch)

What I was doing when the application crashed:
Upon the scheduled update time of weather wallpaper, the plasma desktop crashed.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f8ed09b1750 (LWP 4744))]

Thread 2 (Thread 0x7f8eacea2910 (LWP 4747)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f8ed03f34db in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x18aae08, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x18aae08, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f8ecc82677c in QHostInfoAgent::run (this=0x18aadf0) at kernel/qhostinfo.cpp:260
#4  0x00007f8ed03f2425 in QThreadPrivate::start (arg=0x18aadf0) at thread/qthread_unix.cpp:188
#5  0x00007f8ecd168a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007f8ecdd4a64d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f8ed09b1750 (LWP 4744)):
[KCrash Handler]
#5  QList (this=0x200000000) at /usr/include/qt4/QtCore/qlist.h:111
#6  List (this=0x200000000) at ../../kdecore/io/kurl.h:126
#7  KDirLister::directories (this=0x200000000) at ../../kio/kio/kdirlister.cpp:1969
#8  0x00007f8ec45cecc4 in KFilePreviewGenerator::Private::updateCutItems (this=0x1e1e0a0) at ../../kfile/kfilepreviewgenerator.cpp:641
#9  0x00007f8ec45cf93d in KFilePreviewGenerator::qt_metacall (this=0x1839460, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff71245060) at ./kfilepreviewgenerator.moc:89
#10 0x00007f8ed04edd2c in QMetaObject::activate (sender=0xa07210, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x7f8ed07c9720) at kernel/qobject.cpp:3113
#11 0x00007f8ece4f6fb2 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff712468d0) at kernel/qapplication_x11.cpp:3384
#12 0x00007f8ece51fc2c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#13 0x00007f8ecd3b9ade in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#14 0x00007f8ecd3bd4a8 in ?? () from /usr/lib/libglib-2.0.so.0
#15 0x00007f8ecd3bd5d0 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#16 0x00007f8ed05010f6 in QEventDispatcherGlib::processEvents (this=0x94d040, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#17 0x00007f8ece51f3de in QGuiEventDispatcherGlib::processEvents (this=0x7fff71244f40, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#18 0x00007f8ed04d7482 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#19 0x00007f8ed04d7854 in QEventLoop::exec (this=0x7fff71246c00, flags=) at kernel/qeventloop.cpp:201
#20 0x00007f8ed04d9a09 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#21 0x00007f8ec48534cf in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#22 0x0000000000406da8 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a299 "0") at ../../kinit/kinit.cpp:677
#23 0x0000000000407aa0 in handle_launcher_request (sock=8, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#24 0x0000000000407f51 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#25 0x0000000000408bb2 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi