Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.95 (KDE 4.2.95 (KDE 4.3 RC1))
Qt Version: 4.5.0
Operating System: Linux 2.6.28-13-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Whe open something, it doesn't matter what tha plasma desktop crashes, it happens in verry random periods, but i think that its something connected with the GNOME apps, because it crashes mainly when i'm using a gnome app, eg. Mozilla, totem, exaile...

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3317)]

Thread 2 (Thread 0xa7d8cb90 (LWP 3320)):
#0  0xb802a430 in __kernel_vsyscall ()
#1  0xb64f20e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb66d22ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e249b2 in QWaitCondition::wait (this=0x8b6e580, mutex=0x8b6e57c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7761152 in QHostInfoAgent::run (this=0x8b6e570) at kernel/qhostinfo.cpp:260
#5  0xb7e2396e in QThreadPrivate::start (arg=0x8b6e570) at thread/qthread_unix.cpp:189
#6  0xb64ee4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb66c349e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5ffb700 (LWP 3317)):
[KCrash Handler]
#6  0xa886a32a in TaskManager::GroupManager::manualSortingRequest () from /usr/lib/libtaskmanager.so.4
#7  0xa886831b in TaskManager::AbstractGroupingStrategy::closeGroup () from /usr/lib/libtaskmanager.so.4
#8  0xa886ff27 in ?? () from /usr/lib/libtaskmanager.so.4
#9  0xa8870e5b in ?? () from /usr/lib/libtaskmanager.so.4
#10 0xb7f2dca8 in QMetaObject::activate (sender=0x975b828, from_signal_index=22, to_signal_index=22, argv=0xbf94672c) at kernel/qobject.cpp:3069
#11 0xb7f2e932 in QMetaObject::activate (sender=0x975b828, m=0xa8892b74, local_signal_index=1, argv=0xbf94672c) at kernel/qobject.cpp:3143
#12 0xa8883d83 in TaskManager::TaskGroup::itemRemoved () from /usr/lib/libtaskmanager.so.4
#13 0xa88847ab in TaskManager::TaskGroup::remove () from /usr/lib/libtaskmanager.so.4
#14 0xa886aba5 in ?? () from /usr/lib/libtaskmanager.so.4
#15 0xa886d46a in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#16 0xb7f2dca8 in QMetaObject::activate (sender=0x8881fe0, from_signal_index=5, to_signal_index=5, argv=0xbf9468bc) at kernel/qobject.cpp:3069
#17 0xb7f2e932 in QMetaObject::activate (sender=0x8881fe0, m=0xa8892d3c, local_signal_index=1, argv=0xbf9468bc) at kernel/qobject.cpp:3143
#18 0xa8887823 in TaskManager::TaskManager::taskRemoved () from /usr/lib/libtaskmanager.so.4
#19 0xa88890cf in TaskManager::TaskManager::windowRemoved () from /usr/lib/libtaskmanager.so.4
#20 0xa888afec in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#21 0xb7f2dca8 in QMetaObject::activate (sender=0x8800c40, from_signal_index=6, to_signal_index=6, argv=0xbf946a2c) at kernel/qobject.cpp:3069
#22 0xb7f2e932 in QMetaObject::activate (sender=0x8800c40, m=0xb769626c, local_signal_index=2, argv=0xbf946a2c) at kernel/qobject.cpp:3143
#23 0xb762e853 in KWindowSystem::windowRemoved (this=0x8800c40, _t1=23069930) at /build/buildd/kde4libs-4.2.95/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#24 0xb76310d6 in KWindowSystemPrivate::removeClient (this=0x8686f70, w=23069930) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#25 0xb7640753 in NETRootInfo::update (this=0x8686f84, dirty_props=0xbf946b74) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2135
#26 0xb7640b3f in NETRootInfo::event (this=0x8686f84, event=0xbf94728c, properties=0xbf946c58, properties_size=5) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#27 0xb763136d in KWindowSystemPrivate::x11Event (this=0x8686f70, ev=0xbf94722c) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0xb74e16f9 in KApplication::x11EventFilter (this=0x85430a8, _event=0xbf94722c) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#29 0xb3d92e37 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#30 0xb6a0bf3e in qt_x11EventFilter (ev=0xbf94722c) at kernel/qapplication_x11.cpp:375
#31 0xb6a1e6a8 in QApplication::x11ProcessEvent (this=0x85430a8, event=0xbf94722c) at kernel/qapplication_x11.cpp:3273
#32 0xb6a4ac6a in x11EventSourceDispatch (s=0x8576b70, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb653ab88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb653e0eb in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb653e268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb7f43438 in QEventDispatcherGlib::processEvents (this=0x8573070, flags={i = -1080790040}) at kernel/qeventdispatcher_glib.cpp:323
#37 0xb6a4a365 in QGuiEventDispatcherGlib::processEvents (this=0x8573070, flags={i = -1080789992}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb7f1606a in QEventLoop::processEvents (this=0xbf947490, flags={i = -1080789928}) at kernel/qeventloop.cpp:149
#39 0xb7f164aa in QEventLoop::exec (this=0xbf947490, flags={i = -1080789864}) at kernel/qeventloop.cpp:200
#40 0xb7f18959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#41 0xb69a8d17 in QApplication::exec () at kernel/qapplication.cpp:3553
#42 0xb3d7d510 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x0804e1c0 in launch (argc=1, _name=0x855aac4 "/usr/bin/plasma-desktop", args=0x855aadc "", cwd=0x0, envc=0, envs=0x855aae0 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80512d1 "0") at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:672
#44 0x0804e99d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1164
#45 0x0804ef25 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1357
#46 0x0804fb0a in main (argc=2, argv=0xbf947c84, envp=0xbf947c90) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1784

This bug may be a duplicate of or related to bug 199167

Reported using DrKonqi