Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.3
Operating System: Linux 2.6.30-2-686 i686

What I was doing when the application crashed:
I was trying to read a .pdf by clocking on it ; Okular open several times and then Plasma crashes

 -- Backtrace:
Application: Espace de travail Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb5f85700 (LWP 3058))]

Thread 2 (Thread 0xa9313b90 (LWP 3062)):
#0  0xb7f92424 in __kernel_vsyscall ()
#1  0xb66abf65 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0xb688585d in __pthread_cond_wait (cond=0x9f2da78, mutex=0x9f2da60) at forward.c:139
#3  0xb7d935c2 in QWaitConditionPrivate::wait (this=0x9f34a28, mutex=0x9f34a24, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x9f34a28, mutex=0x9f34a24, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0xb65bfa9a in QHostInfoAgent::run (this=0x9f34a18) at kernel/qhostinfo.cpp:260
#6  0xb7d925e2 in QThreadPrivate::start (arg=0x9f34a18) at thread/qthread_unix.cpp:188
#7  0xb66a84b5 in start_thread (arg=0xa9313b90) at pthread_create.c:300
#8  0xb6876a5e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb5f85700 (LWP 3058)):
[KCrash Handler]
#6  Tasks::itemTopMargin (this=0xad6ea78) at ../../../../plasma/applets/tasks/tasks.h:92
#7  AbstractTaskItem::basicPreferredSize (this=0xad6ea78) at ../../../../plasma/applets/tasks/abstracttaskitem.cpp:100
#8  0xa94b5691 in TaskItemLayout::preferredColumns (this=0x9eccc60) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:206
#9  0xa94b607d in TaskItemLayout::gridLayoutSize (this=0x9eccc60) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:222
#10 0xa94b613b in TaskItemLayout::layoutItems (this=0x9eccc60) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:245
#11 0xa94b6cf2 in TaskItemLayout::insert (this=0x9eccc60, index=6, item=0xadb8b20) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:125
#12 0xa94b6eef in TaskItemLayout::addTaskItem (this=0x9eccc60, item=0xadb8b20) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:82
#13 0xa94c37ed in TaskGroupItem::itemAdded (this=0x9f15e90, groupableItem=0x9ea7578) at ../../../../plasma/applets/tasks/taskgroupitem.cpp:477
#14 0xa94c3e72 in TaskGroupItem::qt_metacall (this=0x9f15e90, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0xbfd0986c) at ./taskgroupitem.moc:113
#15 0xb7e98303 in QMetaObject::activate (sender=0x9f15e58, from_signal_index=21, to_signal_index=21, argv=0xbfd0986c) at kernel/qobject.cpp:3112
#16 0xb7e98f42 in QMetaObject::activate (sender=0x9f15e58, m=0xa9503154, local_signal_index=0, argv=0xbfd0986c) at kernel/qobject.cpp:3186
#17 0xa94f5813 in TaskManager::TaskGroup::itemAdded (this=0x9f15e58, _t1=0x9ea7578) at ./taskgroup.moc:145
#18 0xa94f646b in TaskManager::TaskGroup::add (this=0x9f15e58, item=0x9ea7578) at ../../../libs/taskmanager/taskgroup.cpp:138
#19 0xa94da416 in TaskManager::AbstractGroupingStrategy::closeGroup (this=0xadeed40, group=0xabb6c20) at ../../../libs/taskmanager/abstractgroupingstrategy.cpp:168
#20 0xa94e2187 in TaskManager::ProgramGroupingStrategy::checkGroup (this=0xadeed40) at ../../../libs/taskmanager/strategies/programgroupingstrategy.cpp:210
#21 0xa94e30e1 in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0xadeed40, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfd09a4c) at ./programgroupingstrategy.moc:70
#22 0xb7e98303 in QMetaObject::activate (sender=0xabb6c20, from_signal_index=22, to_signal_index=22, argv=0xbfd09a4c) at kernel/qobject.cpp:3112
#23 0xb7e98f42 in QMetaObject::activate (sender=0xabb6c20, m=0xa9503154, local_signal_index=1, argv=0xbfd09a4c) at kernel/qobject.cpp:3186
#24 0xa94f57c3 in TaskManager::TaskGroup::itemRemoved (this=0xabb6c20, _t1=0xad6a0c8) at ./taskgroup.moc:152
#25 0xa94f61db in TaskManager::TaskGroup::remove (this=0xabb6c20, item=0xad6a0c8) at ../../../libs/taskmanager/taskgroup.cpp:189
#26 0xa94dd86d in TaskManager::GroupManagerPrivate::removeTask (this=0x9ee3530, task=...) at ../../../libs/taskmanager/groupmanager.cpp:311
#27 0xa94df1aa in TaskManager::GroupManager::qt_metacall (this=0x9ece7c8, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0xbfd09bec) at ./groupmanager.moc:105
#28 0xb7e98303 in QMetaObject::activate (sender=0x9e9fa88, from_signal_index=5, to_signal_index=5, argv=0xbfd09bec) at kernel/qobject.cpp:3112
#29 0xb7e98f42 in QMetaObject::activate (sender=0x9e9fa88, m=0xa950331c, local_signal_index=1, argv=0xbfd09bec) at kernel/qobject.cpp:3186
#30 0xa94f9213 in TaskManager::TaskManager::taskRemoved (this=0x9e9fa88, _t1=...) at ./taskmanager.moc:162
#31 0xa94faa61 in TaskManager::TaskManager::windowRemoved (this=0x9e9fa88, w=69206041) at ../../../libs/taskmanager/taskmanager.cpp:279
#32 0xa94fc964 in TaskManager::TaskManager::qt_metacall (this=0x9e9fa88, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbfd09d5c) at ./taskmanager.moc:110
#33 0xb7e98303 in QMetaObject::activate (sender=0x9e19ea0, from_signal_index=6, to_signal_index=6, argv=0xbfd09d5c) at kernel/qobject.cpp:3112
#34 0xb7e98f42 in QMetaObject::activate (sender=0x9e19ea0, m=0xb772278c, local_signal_index=2, argv=0xbfd09d5c) at kernel/qobject.cpp:3186
#35 0xb76bbd93 in KWindowSystem::windowRemoved (this=0x9e19ea0, _t1=69206041) at ./kwindowsystem.moc:127
#36 0xb76be566 in KWindowSystemPrivate::removeClient (this=0x9d47f70, w=69206041) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#37 0xb76cd0dd in NETRootInfo::update (this=0x9d47f84, dirty_props=0xbfd09f28) at ../../kdeui/windowmanagement/netwm.cpp:2183
#38 0xb76cdd0e in NETRootInfo::event (this=0x9d47f84, event=0xbfd0b60c, properties=0xbfd09fa8, properties_size=5) at ../../kdeui/windowmanagement/netwm.cpp:2058
#39 0xb76be7ed in KWindowSystemPrivate::x11Event (this=0x9d47f70, ev=0xbfd0b5ac) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#40 0xb7572489 in KAppX11HackWidget::publicx11Event (this=0x9be7048, _event=0xbfd0b5ac) at ../../kdeui/kernel/kapplication.cpp:900
#41 KApplication::x11EventFilter (this=0x9be7048, _event=0xbfd0b5ac) at ../../kdeui/kernel/kapplication.cpp:950
#42 0xb4b6c6ac in PlasmaApp::x11EventFilter (this=0x9be7048, event=0xbfd0b5ac) at ../../../../plasma/shells/desktop/plasmaapp.cpp:490
#43 0xb6b8bd5e in qt_x11EventFilter (ev=0xbfd0b5ac) at kernel/qapplication_x11.cpp:377
#44 0xb6b9de27 in QApplication::x11ProcessEvent (this=0x9be7048, event=0xbfd0b5ac) at kernel/qapplication_x11.cpp:3273
#45 0xb6bc9bc2 in x11EventSourceDispatch (s=0x9bef5f8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#46 0xb66f5e98 in g_main_dispatch (context=0x9bef020) at /build/buildd-glib2.0_2.22.2-2-i386-R8GTDn/glib2.0-2.22.2/glib/gmain.c:1960
#47 IA__g_main_context_dispatch (context=0x9bef020) at /build/buildd-glib2.0_2.22.2-2-i386-R8GTDn/glib2.0-2.22.2/glib/gmain.c:2513
#48 0xb66f9623 in g_main_context_iterate (context=0x9bef020, block=1, dispatch=1, self=0x9bec940) at /build/buildd-glib2.0_2.22.2-2-i386-R8GTDn/glib2.0-2.22.2/glib/gmain.c:2591
#49 0xb66f97a8 in IA__g_main_context_iteration (context=0x9bef020, may_block=1) at /build/buildd-glib2.0_2.22.2-2-i386-R8GTDn/glib2.0-2.22.2/glib/gmain.c:2654
#50 0xb7eae041 in QEventDispatcherGlib::processEvents (this=0x9becc28, flags=...) at kernel/qeventdispatcher_glib.cpp:407
#51 0xb6bc9305 in QGuiEventDispatcherGlib::processEvents (this=0x9becc28, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#52 0xb7e8183a in QEventLoop::processEvents (this=0xbfd0b810, flags=...) at kernel/qeventloop.cpp:149
#53 0xb7e81c82 in QEventLoop::exec (this=0xbfd0b810, flags=...) at kernel/qeventloop.cpp:201
#54 0xb7e840d9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#55 0xb6b29917 in QApplication::exec () at kernel/qapplication.cpp:3525
#56 0xb4b56f50 in kdemain (argc=1, argv=0x9b75210) at ../../../../plasma/shells/desktop/main.cpp:50
#57 0x0804e291 in launch (argc=1, _name=0x9b898e4 "/usr/bin/plasma-desktop", args=0x9b898fc "", cwd=0x0, envc=0, envs=0x9b89900 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805109f "0") at ../../kinit/kinit.cpp:677
#58 0x0804ea15 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#59 0x0804ef3f in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#60 0x0804f6c9 in main (argc=2, argv=0xbfd0c094, envp=0xbfd0c0a0) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi