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

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 4361)]

Thread 3 (Thread 0xa7bc6b90 (LWP 4363)):
#0  0xb805f430 in __kernel_vsyscall ()
#1  0xb65230e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb67032ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e569b2 in QWaitCondition::wait (this=0xa793108, mutex=0xa793104, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7792152 in QHostInfoAgent::run (this=0xa7930f8) at kernel/qhostinfo.cpp:260
#5  0xb7e5596e in QThreadPrivate::start (arg=0xa7930f8) at thread/qthread_unix.cpp:189
#6  0xb651f4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb66f449e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa7189b90 (LWP 4364)):
#0  0xb805f430 in __kernel_vsyscall ()
#1  0xb6523412 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb6703344 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e55359 in thread_sleep (ti=0xa71892a0) at thread/qthread_unix.cpp:298
#4  0xb7e554e5 in QThread::sleep (secs=1246783335) at thread/qthread_unix.cpp:312
#5  0xa838be4b in ?? () from /usr/lib/kde4/plasma_applet_mail_plasmoid.so
#6  0xb7e5596e in QThreadPrivate::start (arg=0xa828c98) at thread/qthread_unix.cpp:189
#7  0xb651f4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0xb66f449e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb602da10 (LWP 4361)):
[KCrash Handler]
#6  0xa856932a in TaskManager::GroupManager::manualSortingRequest () from /usr/lib/libtaskmanager.so.4
#7  0xa856731b in TaskManager::AbstractGroupingStrategy::closeGroup () from /usr/lib/libtaskmanager.so.4
#8  0xa856ef27 in ?? () from /usr/lib/libtaskmanager.so.4
#9  0xa856fe5b in ?? () from /usr/lib/libtaskmanager.so.4
#10 0xb7f5fca8 in QMetaObject::activate (sender=0xad02358, from_signal_index=22, to_signal_index=22, argv=0xbfc7a21c) at kernel/qobject.cpp:3069
#11 0xb7f60932 in QMetaObject::activate (sender=0xad02358, m=0xa8591b74, local_signal_index=1, argv=0xbfc7a21c) at kernel/qobject.cpp:3143
#12 0xa8582d83 in TaskManager::TaskGroup::itemRemoved () from /usr/lib/libtaskmanager.so.4
#13 0xa85837ab in TaskManager::TaskGroup::remove () from /usr/lib/libtaskmanager.so.4
#14 0xa8569ba5 in ?? () from /usr/lib/libtaskmanager.so.4
#15 0xa856c46a in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#16 0xb7f5fca8 in QMetaObject::activate (sender=0xa273718, from_signal_index=5, to_signal_index=5, argv=0xbfc7a3ac) at kernel/qobject.cpp:3069
#17 0xb7f60932 in QMetaObject::activate (sender=0xa273718, m=0xa8591d3c, local_signal_index=1, argv=0xbfc7a3ac) at kernel/qobject.cpp:3143
#18 0xa8586823 in TaskManager::TaskManager::taskRemoved () from /usr/lib/libtaskmanager.so.4
#19 0xa85880cf in TaskManager::TaskManager::windowRemoved () from /usr/lib/libtaskmanager.so.4
#20 0xa8589fec in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#21 0xb7f5fca8 in QMetaObject::activate (sender=0xa0c9a30, from_signal_index=6, to_signal_index=6, argv=0xbfc7a51c) at kernel/qobject.cpp:3069
#22 0xb7f60932 in QMetaObject::activate (sender=0xa0c9a30, m=0xb76c826c, local_signal_index=2, argv=0xbfc7a51c) at kernel/qobject.cpp:3143
#23 0xb7660853 in KWindowSystem::windowRemoved (this=0xa0c9a30, _t1=50331673) at /build/buildd/kde4libs-4.2.95/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#24 0xb76630d6 in KWindowSystemPrivate::removeClient (this=0x9fe6ab8, w=50331673) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#25 0xb7672753 in NETRootInfo::update (this=0x9fe6acc, dirty_props=0xbfc7a664) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2135
#26 0xb7672b3f in NETRootInfo::event (this=0x9fe6acc, event=0xbfc7ad7c, properties=0xbfc7a748, properties_size=5) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#27 0xb766336d in KWindowSystemPrivate::x11Event (this=0x9fe6ab8, ev=0xbfc7ad1c) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0xb75136f9 in KApplication::x11EventFilter (this=0x9ec5f58, _event=0xbfc7ad1c) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#29 0xb3c37e37 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#30 0xb6a3cf3e in qt_x11EventFilter (ev=0xbfc7ad1c) at kernel/qapplication_x11.cpp:375
#31 0xb6a4f6a8 in QApplication::x11ProcessEvent (this=0x9ec5f58, event=0xbfc7ad1c) at kernel/qapplication_x11.cpp:3273
#32 0xb6a7bc6a in x11EventSourceDispatch (s=0x9f06e00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb656cb88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb65700eb in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb6570268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb7f75438 in QEventDispatcherGlib::processEvents (this=0x9f017e8, flags={i = -1077432616}) at kernel/qeventdispatcher_glib.cpp:323
#37 0xb6a7b365 in QGuiEventDispatcherGlib::processEvents (this=0x9f017e8, flags={i = -1077432568}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb7f4806a in QEventLoop::processEvents (this=0xbfc7af80, flags={i = -1077432504}) at kernel/qeventloop.cpp:149
#39 0xb7f484aa in QEventLoop::exec (this=0xbfc7af80, flags={i = -1077432440}) at kernel/qeventloop.cpp:200
#40 0xb7f4a959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#41 0xb69d9d17 in QApplication::exec () at kernel/qapplication.cpp:3553
#42 0xb3c22510 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x0804e1c0 in launch (argc=1, _name=0x9ee3764 "/usr/bin/plasma-desktop", args=0x9ee377c "", cwd=0x0, envc=0, envs=0x9ee3780 "", 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=0xbfc7b774, envp=0xbfc7b780) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1784

Reported using DrKonqi