Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-14-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
The plasma workspaces crashes switching to Folder View on a fresh install. No itens on Desktop folder

 -- Backtrace:
Application: Espaço de trabalho do Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7717700 (LWP 1832))]

Thread 2 (Thread 0xac428b70 (LWP 1836)):
#0  0x00df8422 in __kernel_vsyscall ()
#1  0x00349e15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00ac878d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x00be6e67 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#4  0x01fd3922 in ?? () from /usr/lib/libQtNetwork.so.4
#5  0x00be5e32 in ?? () from /usr/lib/libQtCore.so.4
#6  0x0034580e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x00abb7ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb7717700 (LWP 1832)):
[KCrash Handler]
#6  0x072bb18a in QGraphicsItem::isWidget() const () from /usr/lib/libQtGui.so.4
#7  0x072f4527 in QGraphicsScene::event(QEvent*) () from /usr/lib/libQtGui.so.4
#8  0x06cb7f54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#9  0x06cbf67c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#10 0x00fcbbfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#11 0x00cd66cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#12 0x073055e7 in QGraphicsView::viewportEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#13 0x0715da95 in ?? () from /usr/lib/libQtGui.so.4
#14 0x00cd583a in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#15 0x06cb7f2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#16 0x06cbf5ca in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#17 0x00fcbbfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#18 0x00cd66cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#19 0x06d0cad5 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x070bc633 in QFrame::event(QEvent*) () from /usr/lib/libQtGui.so.4
#21 0x0715bfaa in QAbstractScrollArea::event(QEvent*) () from /usr/lib/libQtGui.so.4
#22 0x07305406 in QGraphicsView::event(QEvent*) () from /usr/lib/libQtGui.so.4
#23 0x06cb7f54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#24 0x06cbf5ca in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#25 0x00fcbbfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#26 0x00cd66cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#27 0x06cc2df6 in QApplication::setActiveWindow(QWidget*) () from /usr/lib/libQtGui.so.4
#28 0x06d2c21f in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#29 0x06d59502 in ?? () from /usr/lib/libQtGui.so.4
#30 0x04e77e78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#31 0x04e7b720 in ?? () from /lib/libglib-2.0.so.0
#32 0x04e7b853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#33 0x00d0102c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x06d58be5 in ?? () from /usr/lib/libQtGui.so.4
#35 0x00cd4c79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#36 0x00cd50ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0x00cd753f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#38 0x06cb7dd7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#39 0x04f4c80d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#40 0x0804dde1 in _start ()

Reported using DrKonqi