Application: plasma-desktop (0.3)
KDE Platform Version: 4.3.90 (KDE 4.3.90 (KDE 4.4 RC1))
Qt Version: 4.6.0
Operating System: Linux 2.6.31.9-174.fc12.x86_64 x86_64
Distribution: "Fedora release 12 (Constantine)"

-- Information about the crash:
Everytime i right click on the plasma-desktop and open the konsole via that menu, plasma-desktop crashes.

The crash can be reproduced every time.

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7fe50dafe840 (LWP 2013))]

Thread 3 (Thread 0x7fe4f4f6a710 (LWP 2014)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe510f447eb in wait (time=18446744073709551615, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (time=18446744073709551615, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fe513381504 in QHostInfoAgent::run (this=0x208fad0) at kernel/qhostinfo.cpp:252
#4  0x00007fe510f438f5 in QThreadPrivate::start (arg=0x208fad0) at thread/qthread_unix.cpp:244
#5  0x0000003b3da06a3a in start_thread (arg=<value optimized out>) at pthread_create.c:297
#6  0x0000003b3cede67d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fe4efde6710 (LWP 2015)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe50fecd096 in WTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib64/libQtWebKit.so.4
#2  0x00007fe50fecd0d9 in WTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib64/libQtWebKit.so.4
#3  0x0000003b3da06a3a in start_thread (arg=<value optimized out>) at pthread_create.c:297
#4  0x0000003b3cede67d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe50dafe840 (LWP 2013)):
[KCrash Handler]
#5  isNull (this=<value optimized out>) at /usr/include/QtCore/qsharedpointer_impl.h:546
#6  operator! (this=<value optimized out>) at /usr/include/QtCore/qsharedpointer_impl.h:552
#7  TaskManager::TaskItem::winIds (this=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.90/libs/taskmanager/taskitem.cpp:125
#8  0x00007fe4fac091e3 in SmoothTasks::Task::Task (this=0x27e8b70, abstractItem=0x28461d0, parent=<value optimized out>)
    at /usr/src/debug/smooth-tasks-src-wip-2009-12-06/applet/SmoothTasks/Task.cpp:42
#9  0x00007fe4fac0d5ad in SmoothTasks::TaskItem::TaskItem (this=0x281f140, abstractItem=0x28461d0, applet=0x1f155b0)
    at /usr/src/debug/smooth-tasks-src-wip-2009-12-06/applet/SmoothTasks/TaskItem.cpp:87
#10 0x00007fe4fabfc755 in SmoothTasks::Applet::itemAdded (this=0x1f155b0, groupableItem=0x28461d0) at /usr/src/debug/smooth-tasks-src-wip-2009-12-06/applet/SmoothTasks/Applet.cpp:202
#11 0x00007fe4fac009a8 in SmoothTasks::Applet::qt_metacall (this=0x1f155b0, _c=InvokeMetaMethod, _id=7, _a=0x7fffaef98bf0)
    at /usr/src/debug/smooth-tasks-src-wip-2009-12-06/x86_64-redhat-linux-gnu/applet/Applet.moc:108
#12 0x00007fe51103b493 in QMetaObject::activate (sender=0x1f0f850, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffaef98bf0) at kernel/qobject.cpp:3294
#13 0x00007fe4fa9caa3f in TaskManager::TaskGroup::itemAdded (this=<value optimized out>, _t1=0x28461d0)
    at /usr/src/debug/kdebase-workspace-4.3.90/x86_64-redhat-linux-gnu/libs/taskmanager/taskgroup.moc:149
#14 0x00007fe4fa9cb59f in TaskManager::TaskGroup::add (this=0x1f0f850, item=0x28461d0) at /usr/src/debug/kdebase-workspace-4.3.90/libs/taskmanager/taskgroup.cpp:200
#15 0x00007fe4fa9c1cad in TaskManager::ProgramGroupingStrategy::handleItem (this=0x207dd70, item=0x28461d0)
    at /usr/src/debug/kdebase-workspace-4.3.90/libs/taskmanager/strategies/programgroupingstrategy.cpp:159
#16 0x00007fe4fa9bd34d in TaskManager::GroupManagerPrivate::addTask (this=0x1ed7c70, task=...) at /usr/src/debug/kdebase-workspace-4.3.90/libs/taskmanager/groupmanager.cpp:287
#17 0x00007fe4fa9be8da in TaskManager::GroupManager::qt_metacall (this=0x1f5c0d0, _c=<value optimized out>, _id=6, _a=0x7fffaef98eb0)
    at /usr/src/debug/kdebase-workspace-4.3.90/x86_64-redhat-linux-gnu/libs/taskmanager/groupmanager.moc:99
#18 0x00007fe51103b493 in QMetaObject::activate (sender=0x1f5bd80, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffaef98eb0) at kernel/qobject.cpp:3294
#19 0x00007fe4fa9cf2e2 in TaskManager::TaskManager::taskAdded (this=<value optimized out>, _t1=<value optimized out>)
    at /usr/src/debug/kdebase-workspace-4.3.90/x86_64-redhat-linux-gnu/libs/taskmanager/taskmanager.moc:161
#20 0x00007fe4fa9d10a0 in TaskManager::TaskManager::windowAdded (this=0x1f5bd80, w=77594661) at /usr/src/debug/kdebase-workspace-4.3.90/libs/taskmanager/taskmanager.cpp:262
#21 0x00007fe4fa9d209f in TaskManager::TaskManager::qt_metacall (this=0x1f5bd80, _c=InvokeMetaMethod, _id=6, _a=0x7fffaef99150)
    at /usr/src/debug/kdebase-workspace-4.3.90/x86_64-redhat-linux-gnu/libs/taskmanager/taskmanager.moc:115
#22 0x00007fe51103b493 in QMetaObject::activate (sender=0x1cb6c20, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffaef99150) at kernel/qobject.cpp:3294
#23 0x00007fe512ddfe42 in KWindowSystem::windowAdded (this=<value optimized out>, _t1=77594661) at /usr/src/debug/kdelibs-4.3.90/x86_64-redhat-linux-gnu/kdeui/kwindowsystem.moc:126
#24 0x00007fe512de298a in KWindowSystemPrivate::addClient (this=0x1d0b930, w=77594661) at /usr/src/debug/kdelibs-4.3.90/kdeui/windowmanagement/kwindowsystem_x11.cpp:229
#25 0x00007fe512df07dd in NETRootInfo::update (this=0x1d0b958, dirty_props=<value optimized out>) at /usr/src/debug/kdelibs-4.3.90/kdeui/windowmanagement/netwm.cpp:2196
#26 0x00007fe512df14c3 in NETRootInfo::event (this=0x1d0b958, event=0x7fffaef99c50, properties=0x7fffaef99490, properties_size=5)
    at /usr/src/debug/kdelibs-4.3.90/kdeui/windowmanagement/netwm.cpp:2068
#27 0x00007fe512de2ddc in KWindowSystemPrivate::x11Event (this=0x1d0b930, ev=0x7fffaef99c50) at /usr/src/debug/kdelibs-4.3.90/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0x00007fe512cc46a6 in publicx11Event (e=0x7fffaef99c50, this=<value optimized out>) at /usr/src/debug/kdelibs-4.3.90/kdeui/kernel/kapplication.cpp:903
#29 KApplication::x11EventFilter (e=0x7fffaef99c50, this=<value optimized out>) at /usr/src/debug/kdelibs-4.3.90/kdeui/kernel/kapplication.cpp:953
#30 0x00007fe5151b8707 in PlasmaApp::x11EventFilter (this=0x1b40b50, event=0x7fffaef99c50) at /usr/src/debug/kdebase-workspace-4.3.90/plasma/desktop/shell/plasmaapp.cpp:567
#31 0x00007fe5117b73e1 in qt_x11EventFilter (ev=0x7fffaef99c50) at kernel/qapplication_x11.cpp:399
#32 0x00007fe5117c5761 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffaef99c50) at kernel/qapplication_x11.cpp:3231
#33 0x00007fe5117eee42 in x11EventSourceDispatch (s=0x1b62730, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#34 0x0000003b3f63922e in g_main_dispatch (context=<value optimized out>) at gmain.c:1960
#35 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2513
#36 0x0000003b3f63cc18 in g_main_context_iterate (context=0x1b61920, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2591
#37 0x0000003b3f63cd3a in IA__g_main_context_iteration (context=0x1b61920, may_block=1) at gmain.c:2654
#38 0x00007fe51104f313 in QEventDispatcherGlib::processEvents (this=0x1b285a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#39 0x00007fe5117eeb0e in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#40 0x00007fe511028342 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#41 0x00007fe51102860c in QEventLoop::exec (this=0x7fffaef99f80, flags=...) at kernel/qeventloop.cpp:201
#42 0x00007fe51102a8f9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#43 0x00007fe5151a96f2 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.90/plasma/desktop/shell/main.cpp:112
#44 0x0000003b3ce1eb1d in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=<value optimized out>) at libc-start.c:226
#45 0x00000000004007c9 in _start ()

Reported using DrKonqi