Version:            (using Devel)
Installed from:    Compiled sources

Test done with kde 4.2 beta2

Description of problem:
Today while using my computer, the plasma desktop just crash while I was not
doing any interaction with it ... Please note that I installed the -debug
packages.
Plasmoïds active when the desktop crashed : 2 folderviews + default panel at
bottom.
I'm using slideshow wallpapers.

Here is the full backtrace :


Application : Espace de travail Plasma (plasma), signal SIGSEGV
[Current thread is 1 (Thread 0xb43846f0 (LWP 22546))]

Thread 3 (Thread 0xa8bb3b90 (LWP 22547)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb579cb95 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/i686/libpthread.so.0
#2  0xb7e8e21d in pthread_cond_wait () from /lib/i686/libc.so.6
#3  0xb68189ab in QWaitCondition::wait (this=0x9b4dc08, mutex=0x9b4dc04,
time=4294967295) at thread/qwaitcondition_unix.cpp:82
#4  0xb583a54c in QHostInfoAgent::run (this=0x9b4dbf8) at
kernel/qhostinfo.cpp:241
#5  0xb681789f in QThreadPrivate::start (arg=0x9b4dbf8) at
thread/qthread_unix.cpp:185
#6  0xb5799315 in start_thread () from /lib/i686/libpthread.so.0
#7  0xb7e80dde in clone () from /lib/i686/libc.so.6

Thread 2 (Thread 0xa8360b90 (LWP 22551)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb579cb95 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/i686/libpthread.so.0
#2  0xb7e8e21d in pthread_cond_wait () from /lib/i686/libc.so.6
#3  0xb68189ab in QWaitCondition::wait (this=0x99ade40, mutex=0x99ade3c,
time=4294967295) at thread/qwaitcondition_unix.cpp:82
#4  0xa9262cbe in RenderThread::run (this=0x99ade34) at
/usr/src/debug/kdebase-workspace-4.1.85/plasma/wallpapers/image/renderthread.cpp:91
#5  0xb681789f in QThreadPrivate::start (arg=0x99ade34) at
thread/qthread_unix.cpp:185
#6  0xb5799315 in start_thread () from /lib/i686/libpthread.so.0
#7  0xb7e80dde in clone () from /lib/i686/libc.so.6

Thread 1 (Thread 0xb43846f0 (LWP 22546)):
[KCrash Handler]
#6  0xb6926ab9 in QMetaObject::activate (sender=0x9b9eb88, m=0xa8c78a98,
local_signal_index=0, argv=0xbfba7160) at kernel/qobject.cpp:3097
#7  0xa8c407d5 in TaskManager::AbstractGroupingStrategy::groupRemoved
(this=0x9b9eb88, _t1=0x9f844b0) at
/usr/src/debug/kdebase-workspace-4.1.85/build/libs/taskmanager/abstractgroupingstrategy.moc:87
#8  0xa8c41229 in TaskManager::AbstractGroupingStrategy::closeGroup
(this=0x9b9eb88, group=0x9f844b0) at
/usr/src/debug/kdebase-workspace-4.1.85/libs/taskmanager/abstractgroupingstrategy.cpp:143
#9  0xa8c4acf2 in TaskManager::ProgramGroupingStrategy::checkGroup
(this=0x9b9eb88) at
/usr/src/debug/kdebase-workspace-4.1.85/libs/taskmanager/strategies/programgroupingstrategy.cpp:183
#10 0xa8c4b663 in TaskManager::ProgramGroupingStrategy::qt_metacall
(this=0x9b9eb88, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfba72f0)
    at
/usr/src/debug/kdebase-workspace-4.1.85/build/libs/taskmanager/programgroupingstrategy.moc:67
#11 0xb6925c8d in QMetaObject::activate (sender=0x9f844b0,
from_signal_index=22, to_signal_index=22, argv=0xbfba72f0) at
kernel/qobject.cpp:3031
#12 0xb6926a95 in QMetaObject::activate (sender=0x9f844b0, m=0xa8c79ab4,
local_signal_index=1, argv=0xbfba72f0) at kernel/qobject.cpp:3101
#13 0xa8c5cca5 in TaskManager::TaskGroup::itemRemoved (this=0x9f844b0,
_t1=0x9f88540) at
/usr/src/debug/kdebase-workspace-4.1.85/build/libs/taskmanager/taskgroup.moc:141
#14 0xa8c5e15d in TaskManager::TaskGroup::remove (this=0x9f844b0,
item=0x9f88540) at
/usr/src/debug/kdebase-workspace-4.1.85/libs/taskmanager/taskgroup.cpp:170
#15 0xa8c44b76 in TaskManager::GroupManager::remove (this=0x99ca718, task={d =
0xbfba73d4}) at
/usr/src/debug/kdebase-workspace-4.1.85/libs/taskmanager/groupmanager.cpp:278
#16 0xa8c45f03 in TaskManager::GroupManager::qt_metacall (this=0x99ca718,
_c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfba74a0)
    at
/usr/src/debug/kdebase-workspace-4.1.85/build/libs/taskmanager/groupmanager.moc:92
#17 0xb6925c8d in QMetaObject::activate (sender=0x99e7998, from_signal_index=5,
to_signal_index=5, argv=0xbfba74a0) at kernel/qobject.cpp:3031
#18 0xb6926a95 in QMetaObject::activate (sender=0x99e7998, m=0xa8c79c78,
local_signal_index=1, argv=0xbfba74a0) at kernel/qobject.cpp:3101
#19 0xa8c60645 in TaskManager::TaskManager::taskRemoved (this=0x99e7998, _t1={d
= 0xbfba74d4}) at
/usr/src/debug/kdebase-workspace-4.1.85/build/libs/taskmanager/taskmanager.moc:154
#20 0xa8c61361 in TaskManager::TaskManager::windowRemoved (this=0x99e7998,
w=67110855) at
/usr/src/debug/kdebase-workspace-4.1.85/libs/taskmanager/taskmanager.cpp:269
#21 0xa8c61c75 in TaskManager::TaskManager::qt_metacall (this=0x99e7998,
_c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbfba75f0)
    at
/usr/src/debug/kdebase-workspace-4.1.85/build/libs/taskmanager/taskmanager.moc:105
#22 0xb6925c8d in QMetaObject::activate (sender=0x99b4378, from_signal_index=6,
to_signal_index=6, argv=0xbfba75f0) at kernel/qobject.cpp:3031
#23 0xb6926a95 in QMetaObject::activate (sender=0x99b4378, m=0xb798332c,
local_signal_index=2, argv=0xbfba75f0) at kernel/qobject.cpp:3101
#24 0xb78b1e35 in KWindowSystem::windowRemoved (this=0x99b4378, _t1=67110855)
at /usr/src/debug/kdelibs-4.1.85/build/kdeui/kwindowsystem.moc:125
#25 0xb78b487c in KWindowSystemPrivate::removeClient (this=0x9951490,
w=67110855) at
/usr/src/debug/kdelibs-4.1.85/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#26 0xb78c2020 in NETRootInfo::update (this=0x99514a4, dirty_props=0xbfba7724)
at /usr/src/debug/kdelibs-4.1.85/kdeui/windowmanagement/netwm.cpp:2125
#27 0xb78c33d4 in NETRootInfo::event (this=0x99514a4, event=0xbfba7d7c,
properties=0xbfba7804, properties_size=5) at
/usr/src/debug/kdelibs-4.1.85/kdeui/windowmanagement/netwm.cpp:2052
#28 0xb78b494d in KWindowSystemPrivate::x11Event (this=0x9951490,
ev=0xbfba7d1c) at
/usr/src/debug/kdelibs-4.1.85/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#29 0xb7782bfa in KAppX11HackWidget::publicx11Event (this=0x9951490,
e=0xbfba7d1c) at
/usr/src/debug/kdelibs-4.1.85/kdeui/kernel/kapplication.cpp:935
#30 0xb777f98a in KApplication::x11EventFilter (this=0x9866b20,
_event=0xbfba7d1c) at
/usr/src/debug/kdelibs-4.1.85/kdeui/kernel/kapplication.cpp:985
#31 0xb7f34d14 in PlasmaApp::x11EventFilter (this=0x9866b20, event=0xbfba7d1c)
at
/usr/src/debug/kdebase-workspace-4.1.85/plasma/shells/desktop/plasmaapp.cpp:400
#32 0xb6bf2aff in qt_x11EventFilter (ev=0xbfba7d1c) at
kernel/qapplication_x11.cpp:361
#33 0xb6c03ded in QApplication::x11ProcessEvent (this=0x9866b20,
event=0xbfba7d1c) at kernel/qapplication_x11.cpp:2918
#34 0xb6c2e1d4 in x11EventSourceDispatch (s=0x988c1b0, callback=0,
user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:142
#35 0xb5637cba in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#36 0xb563b3d8 in ?? () from /usr/lib/libglib-2.0.so.0
#37 0xb563b598 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#38 0xb693c34a in QEventDispatcherGlib::processEvents (this=0x988a960, flags={i
= -1078296888}) at kernel/qeventdispatcher_glib.cpp:319
#39 0xb6c2d92a in QGuiEventDispatcherGlib::processEvents (this=0x988a960,
flags={i = -1078296840}) at kernel/qguieventdispatcher_glib.cpp:198
#40 0xb690eec3 in QEventLoop::processEvents (this=0xbfba7f70, flags={i =
-1078296776}) at kernel/qeventloop.cpp:143
#41 0xb690f081 in QEventLoop::exec (this=0xbfba7f70, flags={i = -1078296712})
at kernel/qeventloop.cpp:194
#42 0xb69117f2 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:845
#43 0xb6b90e14 in QApplication::exec () at kernel/qapplication.cpp:3331
#44 0xb7f2280b in kdemain (argc=1, argv=0xbfba8134) at
/usr/src/debug/kdebase-workspace-4.1.85/plasma/shells/desktop/main.cpp:58
#45 0x0804856f in main (argc=) at
/usr/src/debug/kdebase-workspace-4.1.85/build/plasma/shells/desktop/plasma_qgv_dummy.cpp:3