Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.5 (4.6.5)
Qt Version: 4.7.3
Operating System: Linux 2.6.32-5-amd64 x86_64
Distribution: Debian GNU/Linux stable-updates (sid)

-- Information about the crash:
- What I was doing when the application crashed:
I clicked on "Download new Google Gadgets" from the kde panel

- Unusual behavior I noticed:
The screen blinked, and gnome 2 desktop briefly appeared before the crash

- Custom settings of the application:
I'm using some updates from the experimental package and some non-free drivers

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f31d0d91780 (LWP 2391))]

Thread 3 (Thread 0x7f31b2947700 (LWP 2392)):
#0  0x00007f31c481a670 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f31c481b46d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f31c481ba99 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f31cd834d06 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f31cd809372 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f31cd80956f in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f31cd72120f in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f31cd7ec39f in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f31cd723c25 in ?? () from /usr/lib/libQtCore.so.4
#9  0x00007f31c552fb40 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007f31d068b36d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f31a436c700 (LWP 4279)):
#0  0x00007f31c55342c4 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f31caaf41c2 in ?? () from /usr/lib/libQtScript.so.4
#2  0x00007f31caaf41f9 in ?? () from /usr/lib/libQtScript.so.4
#3  0x00007f31c552fb40 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007f31d068b36d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f31d0d91780 (LWP 2391)):
[KCrash Handler]
#6  0x00007f31cade6dd0 in typeinfo for QScriptClassPropertyIterator () from /usr/lib/libQtScript.so.4
#7  0x00007f319def8841 in ggadget::TextFrame::GetSimpleExtents(double*, double*) () from /usr/lib/libggadget-1.0.so.0
#8  0x00007f319de37c5c in ggadget::ButtonElement::GetDefaultSize(double*, double*) const () from /usr/lib/libggadget-1.0.so.0
#9  0x00007f319de3610d in ggadget::BasicElement::Impl::Layout() () from /usr/lib/libggadget-1.0.so.0
#10 0x00007f319de6ef2e in ggadget::Elements::Layout() () from /usr/lib/libggadget-1.0.so.0
#11 0x00007f319de35e7b in ggadget::BasicElement::Impl::Layout() () from /usr/lib/libggadget-1.0.so.0
#12 0x00007f319de69b85 in ggadget::DivElement::Layout() () from /usr/lib/libggadget-1.0.so.0
#13 0x00007f319de6ef2e in ggadget::Elements::Layout() () from /usr/lib/libggadget-1.0.so.0
#14 0x00007f319de35e7b in ggadget::BasicElement::Impl::Layout() () from /usr/lib/libggadget-1.0.so.0
#15 0x00007f319de69b85 in ggadget::DivElement::Layout() () from /usr/lib/libggadget-1.0.so.0
#16 0x00007f319de6ef2e in ggadget::Elements::Layout() () from /usr/lib/libggadget-1.0.so.0
#17 0x00007f319df0b80e in ggadget::View::Layout() () from /usr/lib/libggadget-1.0.so.0
#18 0x00007f319e04f585 in ggadget::qt::QtViewWidget::Impl::paintEvent(QPaintEvent*) () from /usr/lib/libggadget-qt-1.0.so.0
#19 0x00007f31ccc13048 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x00007f31ccbc29f4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#21 0x00007f31ccbc7881 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#22 0x00007f31ce4f3b96 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#23 0x00007f31cd80a16c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#24 0x00007f31ccc0ff56 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#25 0x00007f31ccdcce72 in ?? () from /usr/lib/libQtGui.so.4
#26 0x00007f31ccdcd1d6 in ?? () from /usr/lib/libQtGui.so.4
#27 0x00007f31ccc3e055 in ?? () from /usr/lib/libQtGui.so.4
#28 0x00007f31ccc3f0f3 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#29 0x00007f31ccc66db2 in ?? () from /usr/lib/libQtGui.so.4
#30 0x00007f31c481b0cf in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f31c481b8c8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f31c481ba99 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f31cd834c9f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x00007f31ccc66a4e in ?? () from /usr/lib/libQtGui.so.4
#35 0x00007f31cd809372 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#36 0x00007f31cd80956f in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0x00007f31cd80d717 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#38 0x00007f31d097b643 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#39 0x00007f31d05d4ead in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#40 0x00000000004006f1 in _start ()

Reported using DrKonqi