Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.2 (KDE 4.4.2) (Compiled from sources)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-22-generic i686
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
I log onto kubuntu and I have no interface whatsoever. Its just a big black screen.

The crash can be reproduced every time.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb78daaa0 (LWP 1282))]

Thread 2 (Thread 0xaa86cb70 (LWP 1283)):
#0  0x00236344 in __pthread_mutex_unlock_usercnt () from /lib/tls/i686/cmov/libpthread.so.0
#1  0x010e8169 in ?? () from /lib/libglib-2.0.so.0
#2  0x010e84b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00f4560f in QEventDispatcherGlib::processEvents (this=0x8e27e90, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#4  0x00f18059 in QEventLoop::processEvents (this=0xaa86c290, flags=) at kernel/qeventloop.cpp:149
#5  0x00f184aa in QEventLoop::exec (this=0xaa86c290, flags=...) at kernel/qeventloop.cpp:201
#6  0x00e145a8 in QThread::exec (this=0x8e20930) at thread/qthread.cpp:487
#7  0x00ef7c1b in QInotifyFileSystemWatcherEngine::run (this=0x8e20930) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00e1732e in QThreadPrivate::start (arg=0x8e20930) at thread/qthread_unix.cpp:248
#9  0x0023296e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#10 0x06a93a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb78daaa0 (LWP 1282)):
[KCrash Handler]
#6  0x0197238a in Plasma::Calendar::calendarTable (this=0xbfebb128) at ../../../libs/plasmaclock/calendar.cpp:172
#7  0x0196ff7d in ClockApplet::Private::createToday (this=0x8b4da30) at ../../../libs/plasmaclock/clockapplet.cpp:130
#8  0x0196f83e in ClockApplet::qt_metacall (this=0x8aaf5f8, _c=QMetaObject::InvokeMetaMethod, _id=12, _a=0xbfebb28c) at ./clockapplet.moc:105
#9  0x0311c90a in Clock::qt_metacall (this=0x8aaf5f8, _c=QMetaObject::InvokeMetaMethod, _id=76, _a=0xbfebb28c) at ./clock.moc:77
#10 0x00f1ec9a in QMetaObject::metacall (object=0x8aaf5f8, cl=112317376, idx=76, argv=0xbfebb28c) at kernel/qmetaobject.cpp:237
#11 0x00f2d3d5 in QMetaObject::activate (sender=0x8df3db0, m=0x102c188, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3293
#12 0x00f34fe7 in QSingleShotTimer::timeout (this=0x8df3db0) at .moc/release-shared/qtimer.moc:82
#13 0x00f350fc in QSingleShotTimer::timerEvent (this=0x8df3db0) at kernel/qtimer.cpp:308
#14 0x00f2a254 in QObject::event (this=0x8df3db0, e=0xbfebb128) at kernel/qobject.cpp:1212
#15 0x035324dc in QApplicationPrivate::notify_helper (this=0x87357c8, receiver=0x8df3db0, e=0xbfebb7c0) at kernel/qapplication.cpp:4300
#16 0x0353905e in QApplication::notify (this=0x872f670, receiver=0x8df3db0, e=0xbfebb7c0) at kernel/qapplication.cpp:3704
#17 0x00bd9f2a in KApplication::notify (this=0x872f670, receiver=0x8df3db0, event=0xbfebb7c0) at ../../kdeui/kernel/kapplication.cpp:302
#18 0x00f19a3b in QCoreApplication::notifyInternal (this=0x872f670, receiver=0x8df3db0, event=0xbfebb7c0) at kernel/qcoreapplication.cpp:704
#19 0x00f48d66 in QCoreApplication::sendEvent (this=0x8738434) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0x8738434) at kernel/qeventdispatcher_unix.cpp:603
#21 0x00f458e4 in timerSourceDispatch (source=0x8738400) at kernel/qeventdispatcher_glib.cpp:184
#22 0x010e45e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#23 0x010e82d8 in ?? () from /lib/libglib-2.0.so.0
#24 0x010e84b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#25 0x00f455d5 in QEventDispatcherGlib::processEvents (this=0x8735498, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#26 0x035f2135 in QGuiEventDispatcherGlib::processEvents (this=0x8735498, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00f18059 in QEventLoop::processEvents (this=0xbfebba84, flags=) at kernel/qeventloop.cpp:149
#28 0x00f184aa in QEventLoop::exec (this=0xbfebba84, flags=...) at kernel/qeventloop.cpp:201
#29 0x00f1c69f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#30 0x03532577 in QApplication::exec () at kernel/qapplication.cpp:3579
#31 0x0260605e in kdemain (argc=1, argv=0x87265e8) at ../../../../plasma/desktop/shell/main.cpp:112
#32 0x0804e133 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x86febb0 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051465 "0") at ../../kinit/kinit.cpp:717
#33 0x0804ec6d in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1209
#34 0x0804f190 in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1402
#35 0x0804fe4f in main (argc=4, argv=0xbfebc534, envp=0xbfebc548) at ../../kinit/kinit.cpp:1845

Reported using DrKonqi