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 x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I enabled more channels in the Kmix mixer and as a result, the window grew beyond screen width. At the same time plasma-desktop crashed.
I wasn't able to replicate.

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 0 (LWP 12623)]

Thread 6 (Thread 0x7f6516dad950 (LWP 12624)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f653448e939 in QWaitCondition::wait (this=0x30ce390, mutex=0x30ce388, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f6537a524cc in QHostInfoAgent::run (this=0x30ce370) at kernel/qhostinfo.cpp:260
#3  0x00007f653448d952 in QThreadPrivate::start (arg=0x30ce370) at thread/qthread_unix.cpp:189
#4  0x00007f6530c1a3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007f65339eafcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f650e497950 (LWP 18051)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:217
#1  0x00007f650c0a3f91 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f6530c1a3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#3  0x00007f65339eafcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f650ec98950 (LWP 18052)):
#0  0x00007f6530c1d200 in __pthread_mutex_unlock_usercnt (mutex=0x3f54178, decr=1) at pthread_mutex_unlock.c:64
#1  0x00007f652efed1d8 in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#2  0x00007f652efed5ff in ?? () from /usr/lib/libglib-2.0.so.0
#3  0x00007f652efeda7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#4  0x00007f653459fe8e in QEventDispatcherGlib::processEvents (this=0x4299000, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:325
#5  0x00007f6534575002 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 248086416}) at kernel/qeventloop.cpp:149
#6  0x00007f65345753cd in QEventLoop::exec (this=0x7f650ec97fd0, flags={i = 248086496}) at kernel/qeventloop.cpp:200
#7  0x00007f653448a9b8 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:481
#8  0x00007f650c2ff62c in ?? () from /usr/lib/kde4/plugins/phonon_backend/phonon_xine.so
#9  0x00007f653448d952 in QThreadPrivate::start (arg=0x40a43c0) at thread/qthread_unix.cpp:189
#10 0x00007f6530c1a3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#11 0x00007f65339eafcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f6502f60950 (LWP 18072)):
#0  0x00007f65339e1496 in *__GI___poll (fds=0x3bda4b0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f65079a5e3d in ?? () from /usr/lib/libpulse.so.0
#2  0x00007f65079985a9 in pa_mainloop_poll () from /usr/lib/libpulse.so.0
#3  0x00007f6507999bf8 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
#4  0x00007f6507999cc0 in pa_mainloop_run () from /usr/lib/libpulse.so.0
#5  0x00007f65079a5c3d in ?? () from /usr/lib/libpulse.so.0
#6  0x00007f65079c9e10 in ?? () from /usr/lib/libpulse.so.0
#7  0x00007f6530c1a3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#8  0x00007f65339eafcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f6506d5b950 (LWP 18073)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f650c0b5353 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f6530c1a3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#3  0x00007f65339eafcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f653904b790 (LWP 12623)):
[KCrash Handler]
#5  TaskManager::GroupManager::manualSortingRequest (this=0x0, taskItem=0x40d61b0, newIndex=2) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/groupmanager.cpp:363
#6  0x00007f651b547b3a in TaskManager::AbstractGroupingStrategy::closeGroup (this=0x3ec9840, group=0x414ae20)
    at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/abstractgroupingstrategy.cpp:167
#7  0x00007f651b54eda8 in TaskManager::ProgramGroupingStrategy::checkGroup (this=0x3ec9840) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/strategies/programgroupingstrategy.cpp:204
#8  0x00007f651b54fc2d in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0x3ec9840, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=<value optimized out>)
    at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/programgroupingstrategy.moc:68
#9  0x00007f653458c1f2 in QMetaObject::activate (sender=0x414ae20, from_signal_index=<value optimized out>, to_signal_index=22, argv=0x1) at kernel/qobject.cpp:3069
#10 0x00007f651b560a92 in TaskManager::TaskGroup::itemRemoved (this=0x0, _t1=0x41029c0) at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/taskgroup.moc:146
#11 0x00007f651b5613b1 in TaskManager::TaskGroup::remove (this=0x414ae20, item=0x41029c0) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/taskgroup.cpp:182
#12 0x00007f651b549ed1 in TaskManager::GroupManagerPrivate::removeTask (this=0x25d9810, task={d = 0x7fff4118ae80}) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/groupmanager.cpp:311
#13 0x00007f651b54c51d in TaskManager::GroupManager::qt_metacall (this=0x25d97e0, _c=<value optimized out>, _id=<value optimized out>, _a=0x7fff4118afc0)
    at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/groupmanager.moc:105
#14 0x00007f653458c1f2 in QMetaObject::activate (sender=0x25d9910, from_signal_index=<value optimized out>, to_signal_index=5, argv=0x1) at kernel/qobject.cpp:3069
#15 0x00007f651b563f35 in TaskManager::TaskManager::taskRemoved (this=0x0, _t1=<value optimized out>)
    at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/taskmanager.moc:162
#16 0x00007f651b56556e in TaskManager::TaskManager::windowRemoved (this=0x25d9910, w=37763822) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/taskmanager.cpp:279
#17 0x00007f651b5672bf in TaskManager::TaskManager::qt_metacall (this=0x25d9910, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff4118b1e0)
    at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/taskmanager.moc:110
#18 0x00007f653458c1f2 in QMetaObject::activate (sender=0x24bde00, from_signal_index=<value optimized out>, to_signal_index=6, argv=0x1) at kernel/qobject.cpp:3069
#19 0x00007f65374b7ab2 in KWindowSystem::windowRemoved (this=0x0, _t1=37763822) at /build/buildd/kde4libs-4.2.95/obj-x86_64-linux-gnu/kdeui/kwindowsystem.moc:127
#20 0x00007f65374b9ffb in KWindowSystemPrivate::removeClient (this=0x24b7ff0, w=37763822) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#21 0x00007f65374c8fe1 in NETRootInfo::update (this=0x24b8018, dirty_props=<value optimized out>) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2135
#22 0x00007f65374c936b in NETRootInfo::event (this=0x24b8018, event=<value optimized out>, properties=0x7fff4118b4d0, properties_size=5)
    at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#23 0x00007f65374ba2cb in KWindowSystemPrivate::x11Event (this=0x24b7ff0, ev=0x7fff4118bec0) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#24 0x00007f6537389a43 in KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fff4118bec0) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#25 0x00007f6538d37b57 in PlasmaApp::x11EventFilter (this=0x20e6330, event=0x7fff4118bec0) at /build/buildd/kdebase-workspace-4.2.95/plasma/shells/desktop/plasmaapp.cpp:490
#26 0x00007f6534d17b1f in qt_x11EventFilter (ev=0x7fff4118bec0) at kernel/qapplication_x11.cpp:375
#27 0x00007f6534d2afaf in QApplication::x11ProcessEvent (this=0x20e6330, event=0x7fff4118bec0) at kernel/qapplication_x11.cpp:3273
#28 0x00007f6534d54464 in x11EventSourceDispatch (s=0x20fb460, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#29 0x00007f652efea20a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0x00007f652efed8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#31 0x00007f652efeda7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#32 0x00007f653459fe6f in QEventDispatcherGlib::processEvents (this=0x20cdd80, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#33 0x00007f6534d53bef in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#34 0x00007f6534575002 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 1092141488}) at kernel/qeventloop.cpp:149
#35 0x00007f65345753cd in QEventLoop::exec (this=0x7fff4118c1f0, flags={i = 1092141568}) at kernel/qeventloop.cpp:200
#36 0x00007f6534577694 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#37 0x00007f6538d2463b in kdemain (argc=1, argv=0x7fff4118c4f8) at /build/buildd/kdebase-workspace-4.2.95/plasma/shells/desktop/main.cpp:50
#38 0x00007f65339235a6 in __libc_start_main (main=0x400890 <main>, argc=1, ubp_av=0x7fff4118c4f8, init=0x4008c0 <__libc_csu_init>, fini=<value optimized out>, rtld_fini=<value optimized out>, 
    stack_end=0x7fff4118c4e8) at libc-start.c:220
#39 0x00000000004007c9 in _start () at ../sysdeps/x86_64/elf/start.S:113

Reported using DrKonqi