Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.26-2-686 i686
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
when opening folder with dolphin from the Desktop View Folder Applet (showing desktop) via single click the plasma workspace crashes. recovers within seconds with all the widgets in it's places except the folder view which reappears with default settings (i.e. not where I had it).

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb5fa4700 (LWP 17434))]

Thread 3 (Thread 0xa87adb90 (LWP 17442)):
#0  0xb7fbc424 in __kernel_vsyscall ()
#1  0xb66d6f65 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/cmov/libpthread.so.0
#2  0xb68b085d in pthread_cond_wait () from /lib/i686/cmov/libc.so.6
#3  0xb7dba562 in QWaitConditionPrivate::wait (this=0x8b05330, mutex=0x8b0532c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x8b05330, mutex=0x8b0532c, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0xb65dd67a in QHostInfoAgent::run (this=0x8b05320) at kernel/qhostinfo.cpp:260
#6  0xb7db9582 in QThreadPrivate::start (arg=0x8b05320) at thread/qthread_unix.cpp:188
#7  0xb66d34b5 in start_thread () from /lib/i686/cmov/libpthread.so.0
#8  0xb68a1a5e in clone () from /lib/i686/cmov/libc.so.6

Thread 2 (Thread 0xa6e27b90 (LWP 17514)):
#0  0xb66d6320 in pthread_mutex_unlock () from /lib/i686/cmov/libpthread.so.0
#1  0xb68b0a66 in pthread_mutex_unlock () from /lib/i686/cmov/libc.so.6
#2  0xb6720354 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#3  0xb6723a13 in ?? () from /usr/lib/libglib-2.0.so.0
#4  0xb6723b98 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#5  0xb7ed5877 in QEventDispatcherGlib::processEvents (this=0x8ec7468, flags=...) at kernel/qeventdispatcher_glib.cpp:329
#6  0xb7ea901a in QEventLoop::processEvents (this=0xa6e272e0, flags=...) at kernel/qeventloop.cpp:149
#7  0xb7ea9462 in QEventLoop::exec (this=0xa6e272e0, flags=...) at kernel/qeventloop.cpp:201
#8  0xb7db62c9 in QThread::exec (this=0x8ec7ba8) at thread/qthread.cpp:487
#9  0xa7f51eac in ?? () from /usr/lib/kde4/plugins/marble/GpsdPositionProviderPlugin.so
#10 0xb7db9582 in QThreadPrivate::start (arg=0x8ec7ba8) at thread/qthread_unix.cpp:188
#11 0xb66d34b5 in start_thread () from /lib/i686/cmov/libpthread.so.0
#12 0xb68a1a5e in clone () from /lib/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5fa4700 (LWP 17434)):
[KCrash Handler]
#6  Tasks::itemTopMargin (this=0x957c3a0) at ../../../../plasma/applets/tasks/tasks.h:92
#7  AbstractTaskItem::basicPreferredSize (this=0x957c3a0) at ../../../../plasma/applets/tasks/abstracttaskitem.cpp:100
#8  0xa999f71c in TaskItemLayout::maximumRows (this=0x8931c60) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:185
#9  0xa99a8d54 in TaskGroupItem::optimumCapacity (this=0x89ca318) at ../../../../plasma/applets/tasks/taskgroupitem.cpp:1224
#10 0xa999a508 in Tasks::adjustGroupingStrategy (this=0x890c260) at ../../../../plasma/applets/tasks/tasks.cpp:241
#11 0xa999a79c in Tasks::constraintsEvent (this=0x890c260, constraints=...) at ../../../../plasma/applets/tasks/tasks.cpp:165
#12 0xb5cf983e in Plasma::Applet::flushPendingConstraintsEvents (this=0x890c260) at ../../plasma/applet.cpp:1163
#13 0xb5cf9ed8 in Plasma::Applet::timerEvent (this=0x890c260, event=0xbffd808c) at ../../plasma/applet.cpp:2110
#14 0xb7ebabcf in QObject::event (this=0x890c260, e=0xbffd808c) at kernel/qobject.cpp:1074
#15 0xb71a1717 in QGraphicsWidget::event (this=0x890c260, event=0xbffd808c) at graphicsview/qgraphicswidget.cpp:1340
#16 0xb6b52814 in QApplicationPrivate::notify_helper (this=0x8629390, receiver=0x890c260, e=0xbffd808c) at kernel/qapplication.cpp:4056
#17 0xb6b5a97e in QApplication::notify (this=0x8602408, receiver=0x890c260, e=0xbffd808c) at kernel/qapplication.cpp:3603
#18 0xb759b4ad in KApplication::notify (this=0x8602408, receiver=0x890c260, event=0xbffd808c) at ../../kdeui/kernel/kapplication.cpp:302
#19 0xb7eaa9cb in QCoreApplication::notifyInternal (this=0x8602408, receiver=0x890c260, event=0xbffd808c) at kernel/qcoreapplication.cpp:610
#20 0xb7ed9361 in QCoreApplication::sendEvent (this=0x862bf74) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#21 QTimerInfoList::activateTimers (this=0x862bf74) at kernel/qeventdispatcher_unix.cpp:572
#22 0xb7ed5900 in timerSourceDispatch (source=0x862bf40) at kernel/qeventdispatcher_glib.cpp:165
#23 0xb67204b8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0xb6723a13 in ?? () from /usr/lib/libglib-2.0.so.0
#25 0xb6723b98 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#26 0xb7ed5858 in QEventDispatcherGlib::processEvents (this=0x8629150, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#27 0xb6bf1fd5 in QGuiEventDispatcherGlib::processEvents (this=0x8629150, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#28 0xb7ea901a in QEventLoop::processEvents (this=0xbffd82b0, flags=...) at kernel/qeventloop.cpp:149
#29 0xb7ea9462 in QEventLoop::exec (this=0xbffd82b0, flags=...) at kernel/qeventloop.cpp:201
#30 0xb7eab8b9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#31 0xb6b52697 in QApplication::exec () at kernel/qapplication.cpp:3525
#32 0xb4b76f40 in kdemain (argc=1, argv=0x85e3cc8) at ../../../../plasma/shells/desktop/main.cpp:50
#33 0x0804e291 in launch (argc=1, _name=0x85c704c "/usr/bin/plasma-desktop", args=0x85c7064 "", cwd=0x0, envc=0, envs=0x85c7068 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805109f "0") at ../../kinit/kinit.cpp:677
#34 0x0804ea15 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#35 0x0804ef3f in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#36 0x0804f6c9 in main (argc=2, argv=0xbffd8b34, envp=0xbffd8b40) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi