Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-17-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I have had this problem many time.
First after a update plasma crash, then after installing facebook plasma, third after ... nothing and now just before I have installed a super Karamba theme, first time...
Each time this is after a reboot but this is the first time the bug manager launch himself.
I can use Alt+F2, Alt+TAB and each windows opened before the crash resume normally. But that all everuthing else is... void.

 -- Backtrace:
Application: Espace de travail Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7829700 (LWP 2262))]

Thread 2 (Thread 0xa93f5b70 (LWP 2265)):
#0  0x008e3422 in __kernel_vsyscall ()
#1  0x008bfe15 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x08ce478d in __pthread_cond_wait (cond=0x97da370, mutex=0x97da358) at forward.c:139
#3  0x00cb7e67 in QWaitConditionPrivate::wait (this=0x9877478, mutex=0x9877474, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x9877478, mutex=0x9877474, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x06b51922 in QHostInfoAgent::run (this=0x9877468) at kernel/qhostinfo.cpp:260
#6  0x00cb6e32 in QThreadPrivate::start (arg=0x9877468) at thread/qthread_unix.cpp:188
#7  0x008bb80e in start_thread (arg=0xa93f5b70) at pthread_create.c:300
#8  0x08cd77ee in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb7829700 (LWP 2262)):
[KCrash Handler]
#6  0x019e76ce in Plasma::Applet::flushPendingConstraintsEvents (this=0x93a5498) at ../../plasma/applet.cpp:1114
#7  0x01a0b7fd in Plasma::Corona::loadLayout (this=0x8ef3680, configName=...) at ../../plasma/corona.cpp:379
#8  0x01a0c8de in Plasma::Corona::initializeLayout (this=0x8ef3680, configName=...) at ../../plasma/corona.cpp:324
#9  0x04ede1d6 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#10 0x04ede4da in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#11 0x04ede733 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#12 0x00dbd263 in QMetaObject::activate (sender=0x8ec2888, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#13 0x00dbdec2 in QMetaObject::activate (sender=0x8ec2888, m=0xe97908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#14 0x00dc2387 in QSingleShotTimer::timeout (this=0x8ec2888) at .moc/release-shared/qtimer.moc:76
#15 0x00dc249c in QSingleShotTimer::timerEvent (this=0x8ec2888) at kernel/qtimer.cpp:298
#16 0x00db73bf in QObject::event (this=0x8ec2888, e=0xbf8f7b40) at kernel/qobject.cpp:1075
#17 0x00fbbf54 in QApplicationPrivate::notify_helper (this=0x8e1f878, receiver=0x8ec2888, e=0xbf8f7b40) at kernel/qapplication.cpp:4056
#18 0x00fc367c in QApplication::notify (this=0x8e198a8, receiver=0x8ec2888, e=0xbf8f7b40) at kernel/qapplication.cpp:3603
#19 0x006d11aa in KApplication::notify (this=0x8e198a8, receiver=0x8ec2888, event=0xbf8f7b40) at ../../kdeui/kernel/kapplication.cpp:302
#20 0x00da76cb in QCoreApplication::notifyInternal (this=0x8e198a8, receiver=0x8ec2888, event=0xbf8f7b40) at kernel/qcoreapplication.cpp:610
#21 0x00dd47ce in QCoreApplication::sendEvent (this=0x8e22434) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#22 QTimerInfoList::activateTimers (this=0x8e22434) at kernel/qeventdispatcher_unix.cpp:572
#23 0x00dd20e0 in timerSourceDispatch (source=0x8e22400) at kernel/qeventdispatcher_glib.cpp:165
#24 0x0333fe88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#25 0x03343730 in ?? () from /lib/libglib-2.0.so.0
#26 0x03343863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#27 0x00dd202c in QEventDispatcherGlib::processEvents (this=0x8e1f668, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#28 0x0105cbe5 in QGuiEventDispatcherGlib::processEvents (this=0x8e1f668, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#29 0x00da5c79 in QEventLoop::processEvents (this=0xbf8f7e04, flags=) at kernel/qeventloop.cpp:149
#30 0x00da60ca in QEventLoop::exec (this=0xbf8f7e04, flags=...) at kernel/qeventloop.cpp:201
#31 0x00da853f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#32 0x00fbbdd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#33 0x04ec180d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#34 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x8da4ba0 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#35 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#36 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#37 0x0804fbaf in main (argc=2, argv=0xbf8f8664, envp=0xbf8f8670) at ../../kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 220975

Reported using DrKonqi