Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-16-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Right click on the desktop -> Settings 'Desktop' -> Type: folder -> apply

I am useing czech localization so the labels probably are not exact

 -- Backtrace:
Application: Pracovní plocha Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fc104d8c750 (LWP 2573))]

Thread 2 (Thread 0x7fc0e2660910 (LWP 2576)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fc1047d24fb in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x2ec6ff8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2ec6ff8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fc100c0578c in QHostInfoAgent::run (this=0x2ec6fe0) at kernel/qhostinfo.cpp:260
#4  0x00007fc1047d1445 in QThreadPrivate::start (arg=0x2ec6fe0) at thread/qthread_unix.cpp:188
#5  0x00007fc101543a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007fc1021237bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fc104d8c750 (LWP 2573)):
[KCrash Handler]
#5  0x00007fc102de4484 in QGraphicsItem::isWidget (this=0x2b49760) at graphicsview/qgraphicsitem.cpp:1143
#6  0x00007fc102de6b89 in QGraphicsItem::isWindow (this=0x2b49760) at graphicsview/qgraphicsitem.cpp:1156
#7  0x00007fc102e1a269 in QGraphicsScene::event (this=0x257f300, event=<value optimized out>) at graphicsview/qgraphicsscene.cpp:3850
#8  0x00007fc102863efc in QApplicationPrivate::notify_helper (this=0x25417d0, receiver=0x257f300, e=0x7fff635aa880) at kernel/qapplication.cpp:4056
#9  0x00007fc10286b1ce in QApplication::notify (this=0x252eb00, receiver=0x257f300, e=0x7fff635aa880) at kernel/qapplication.cpp:4021
#10 0x00007fc10349ae56 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#11 0x00007fc1048b7c2c in QCoreApplication::notifyInternal (this=0x252eb00, receiver=0x257f300, event=0x7fff635aa880) at kernel/qcoreapplication.cpp:610
#12 0x00007fc102e2b9f6 in QCoreApplication::sendEvent (this=0x3006e20, event=0x7fff635aa880) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#13 QGraphicsView::viewportEvent (this=0x3006e20, event=0x7fff635aa880) at graphicsview/qgraphicsview.cpp:2880
#14 0x00007fc1048b6f47 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x27a15f0, event=0x7fff635aa880) at kernel/qcoreapplication.cpp:726
#15 0x00007fc102863ecc in QApplicationPrivate::notify_helper (this=0x25417d0, receiver=0x27a15f0, e=0x7fff635aa880) at kernel/qapplication.cpp:4052
#16 0x00007fc10286b1ce in QApplication::notify (this=0x252eb00, receiver=0x27a15f0, e=0x7fff635aa880) at kernel/qapplication.cpp:4021
#17 0x00007fc10349ae56 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#18 0x00007fc1048b7c2c in QCoreApplication::notifyInternal (this=0x252eb00, receiver=0x27a15f0, event=0x7fff635aa880) at kernel/qcoreapplication.cpp:610
#19 0x00007fc1028b2b6b in QCoreApplication::sendEvent (this=<value optimized out>, event=0x7fff635aa880) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 QWidget::event (this=<value optimized out>, event=0x7fff635aa880) at kernel/qwidget.cpp:7797
#21 0x00007fc102c0e2a6 in QFrame::event (this=0x3006e20, e=0x7fff635aa880) at widgets/qframe.cpp:559
#22 0x00007fc102c9dbc9 in QAbstractScrollArea::event (this=0x3006e20, e=0x7fff635aa880) at widgets/qabstractscrollarea.cpp:918
#23 0x00007fc102863efc in QApplicationPrivate::notify_helper (this=0x25417d0, receiver=0x3006e20, e=0x7fff635aa880) at kernel/qapplication.cpp:4056
#24 0x00007fc10286b1ce in QApplication::notify (this=0x252eb00, receiver=0x3006e20, e=0x7fff635aa880) at kernel/qapplication.cpp:4021
#25 0x00007fc10349ae56 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#26 0x00007fc1048b7c2c in QCoreApplication::notifyInternal (this=0x252eb00, receiver=0x3006e20, event=0x7fff635aa880) at kernel/qcoreapplication.cpp:610
#27 0x00007fc10286e55b in QCoreApplication::sendSpontaneousEvent (act=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#28 QApplication::setActiveWindow (act=<value optimized out>) at kernel/qapplication.cpp:2414
#29 0x00007fc1028cfb9e in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff635ac160) at kernel/qapplication_x11.cpp:3469
#30 0x00007fc1028f8d0c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#31 0x00007fc101794bce in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#32 0x00007fc101798598 in ?? () from /lib/libglib-2.0.so.0
#33 0x00007fc1017986c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#34 0x00007fc1048e01a6 in QEventDispatcherGlib::processEvents (this=0x24b0040, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#35 0x00007fc1028f84be in QGuiEventDispatcherGlib::processEvents (this=0x2b49760, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#36 0x00007fc1048b6532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#37 0x00007fc1048b6904 in QEventLoop::exec (this=0x7fff635ac490, flags=) at kernel/qeventloop.cpp:201
#38 0x00007fc1048b8ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#39 0x00007fc0f8c3b4cf in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#40 0x0000000000406da8 in _start ()
The current source language is "auto; currently asm".
The current source language is "auto; currently c".

This bug may be a duplicate of or related to bug 218209

Reported using DrKonqi