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:
the bug is reproducable, it might crash on random too. 
I'm using Version 4.2.95 (KDE 4.2.95 (KDE 4.3 RC1)).

I don't think any open applications play any role with this bug


 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3753)]

Thread 2 (Thread 0xa8470b90 (LWP 3754)):
#0  0xb807d430 in __kernel_vsyscall ()
#1  0xb65430e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb67232ed in __pthread_cond_wait (cond=0x9a555f8, mutex=0x9a555e0) at forward.c:139
#3  0xb7e769b2 in QWaitCondition::wait (this=0x9a8a768, mutex=0x9a8a764, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb77b2152 in QHostInfoAgent::run (this=0x9a8a758) at kernel/qhostinfo.cpp:260
#5  0xb7e7596e in QThreadPrivate::start (arg=0x9a8a758) at thread/qthread_unix.cpp:189
#6  0xb653f4ff in start_thread (arg=0xa8470b90) at pthread_create.c:297
#7  0xb671449e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb604da10 (LWP 3753)):
[KCrash Handler]
#6  0xa868f32a in TaskManager::GroupManager::manualSortingRequest () from /usr/lib/libtaskmanager.so.4
#7  0xa868d31b in TaskManager::AbstractGroupingStrategy::closeGroup () from /usr/lib/libtaskmanager.so.4
#8  0xa8694f27 in ?? () from /usr/lib/libtaskmanager.so.4
#9  0xa8695e5b in ?? () from /usr/lib/libtaskmanager.so.4
#10 0xb7f7fca8 in QMetaObject::activate (sender=0xaedb678, from_signal_index=22, to_signal_index=22, argv=0xbfb9793c) at kernel/qobject.cpp:3069
#11 0xb7f80932 in QMetaObject::activate (sender=0xaedb678, m=0xa86b7b74, local_signal_index=1, argv=0xbfb9793c) at kernel/qobject.cpp:3143
#12 0xa86a8d83 in TaskManager::TaskGroup::itemRemoved () from /usr/lib/libtaskmanager.so.4
#13 0xa86a97ab in TaskManager::TaskGroup::remove () from /usr/lib/libtaskmanager.so.4
#14 0xa868fba5 in ?? () from /usr/lib/libtaskmanager.so.4
#15 0xa869246a in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#16 0xb7f7fca8 in QMetaObject::activate (sender=0x9703fe0, from_signal_index=5, to_signal_index=5, argv=0xbfb97acc) at kernel/qobject.cpp:3069
#17 0xb7f80932 in QMetaObject::activate (sender=0x9703fe0, m=0xa86b7d3c, local_signal_index=1, argv=0xbfb97acc) at kernel/qobject.cpp:3143
#18 0xa86ac823 in TaskManager::TaskManager::taskRemoved () from /usr/lib/libtaskmanager.so.4
#19 0xa86ae0cf in TaskManager::TaskManager::windowRemoved () from /usr/lib/libtaskmanager.so.4
#20 0xa86affec in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#21 0xb7f7fca8 in QMetaObject::activate (sender=0x9667af8, from_signal_index=6, to_signal_index=6, argv=0xbfb97c3c) at kernel/qobject.cpp:3069
#22 0xb7f80932 in QMetaObject::activate (sender=0x9667af8, m=0xb76e826c, local_signal_index=2, argv=0xbfb97c3c) at kernel/qobject.cpp:3143
#23 0xb7680853 in KWindowSystem::windowRemoved (this=0x9667af8, _t1=69206020) at /build/buildd/kde4libs-4.2.95/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#24 0xb76830d6 in KWindowSystemPrivate::removeClient (this=0x94de2d8, w=69206020) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#25 0xb7692753 in NETRootInfo::update (this=0x94de2ec, dirty_props=0xbfb97d84) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2135
#26 0xb7692b3f in NETRootInfo::event (this=0x94de2ec, event=0xbfb9849c, properties=0xbfb97e68, properties_size=5) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#27 0xb768336d in KWindowSystemPrivate::x11Event (this=0x94de2d8, ev=0xbfb9843c) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0xb75336f9 in KApplication::x11EventFilter (this=0x93e3f70, _event=0xbfb9843c) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#29 0xb3c59e37 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#30 0xb6a5cf3e in qt_x11EventFilter (ev=0xbfb9843c) at kernel/qapplication_x11.cpp:375
#31 0xb6a6f6a8 in QApplication::x11ProcessEvent (this=0x93e3f70, event=0xbfb9843c) at kernel/qapplication_x11.cpp:3273
#32 0xb6a9bc6a in x11EventSourceDispatch (s=0x93eccb0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb658cb88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb65900eb in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb6590268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb7f95438 in QEventDispatcherGlib::processEvents (this=0x93e7758, flags={i = -1078360584}) at kernel/qeventdispatcher_glib.cpp:323
#37 0xb6a9b365 in QGuiEventDispatcherGlib::processEvents (this=0x93e7758, flags={i = -1078360536}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb7f6806a in QEventLoop::processEvents (this=0xbfb986a0, flags={i = -1078360472}) at kernel/qeventloop.cpp:149
#39 0xb7f684aa in QEventLoop::exec (this=0xbfb986a0, flags={i = -1078360408}) at kernel/qeventloop.cpp:200
#40 0xb7f6a959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#41 0xb69f9d17 in QApplication::exec () at kernel/qapplication.cpp:3553
#42 0xb3c44510 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x0804e1c0 in launch (argc=1, _name=0x93b15a4 "/usr/bin/plasma-desktop", args=0x93b15bc "", cwd=0x0, envc=0, envs=0x93b15c0 "", 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=0xbfb98e94, envp=0xbfb98ea0) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1784

Reported using DrKonqi