Version:            (using Devel)
Compiler:          gcc 4.1.2 gcc (GCC) 4.1.2 (Gentoo 4.1.2 p1.1)
OS:                Linux
Installed from:    Compiled sources

plasma crashes randomly while playing with an applet that use IconWidget.

How to reproduce this bug: no idea. I get this bug randomly when I do things like clicking on an applet (lock/logout, simple launcher, etc...) after having moved it from the desktop to the panel.

Backtrace:
Application: Plasma Workspace (plasma), signal SIGSEGV
[?1034hUsing host libthread_db library "/lib/libthread_db.so.1".
[Current thread is 0 (LWP 7798)]

Thread 4 (Thread 0xa9d2ab90 (LWP 7799)):
#0  0xb7f9a424 in __kernel_vsyscall ()
#1  0xb655b566 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb65b6eed in QWaitCondition::wait () from /usr/lib/qt4/libQtCore.so.4
#3  0xb794117c in ?? () from /usr/lib/qt4/libQtNetwork.so.4
#4  0xb65b6428 in ?? () from /usr/lib/qt4/libQtCore.so.4
#5  0xb655717b in start_thread () from /lib/libpthread.so.0
#6  0xb63d009e in clone () from /lib/libc.so.6

Thread 3 (Thread 0xa94efb90 (LWP 7800)):
#0  0xb7f9a424 in __kernel_vsyscall ()
#1  0xb63c97d1 in select () from /lib/libc.so.6
#2  0xb667fcb0 in ?? () from /usr/lib/qt4/libQtCore.so.4
#3  0xb65b6428 in ?? () from /usr/lib/qt4/libQtCore.so.4
#4  0xb655717b in start_thread () from /lib/libpthread.so.0
#5  0xb63d009e in clone () from /lib/libc.so.6

Thread 2 (Thread 0xa8ceeb90 (LWP 7803)):
#0  0xb7f9a424 in __kernel_vsyscall ()
#1  0xb655b566 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb65b6eed in QWaitCondition::wait () from /usr/lib/qt4/libQtCore.so.4
#3  0xa9e2781f in RenderThread::run (this=0x8230f1c) at /home/kde-devel/kde/src/KDE/kdebase/workspace/plasma/wallpapers/image/renderthread.cpp:91
#4  0xb65b6428 in ?? () from /usr/lib/qt4/libQtCore.so.4
#5  0xb655717b in start_thread () from /lib/libpthread.so.0
#6  0xb63d009e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb53d36d0 (LWP 7798)):
[KCrash Handler]
#6  0x416fffff in ?? ()
#7  0xb7df59cc in Plasma::ContainmentPrivate::focusApplet (this=0x8118548, applet=0x82abfa8) at /home/kde-devel/kde/src/KDE/kdelibs/plasma/containment.cpp:1373
#8  0xb7ddeec3 in Plasma::Applet::focusInEvent (this=0x82abfa8, event=0xbf8b1f28) at /home/kde-devel/kde/src/KDE/kdelibs/plasma/applet.cpp:1295
#9  0xb6ea568d in QGraphicsItem::sceneEvent () from /usr/lib/qt4/libQtGui.so.4
#10 0xb6ee6000 in QGraphicsWidget::sceneEvent () from /usr/lib/qt4/libQtGui.so.4
#11 0xb6ebdece in ?? () from /usr/lib/qt4/libQtGui.so.4
#12 0xb6ebfcf5 in QGraphicsScene::setFocusItem () from /usr/lib/qt4/libQtGui.so.4
#13 0xb6ecd3dd in ?? () from /usr/lib/qt4/libQtGui.so.4
#14 0xb6ecd9ba in QGraphicsScene::mousePressEvent () from /usr/lib/qt4/libQtGui.so.4
#15 0xb6ecc423 in QGraphicsScene::event () from /usr/lib/qt4/libQtGui.so.4
#16 0xb694b554 in QApplicationPrivate::notify_helper () from /usr/lib/qt4/libQtGui.so.4
#17 0xb694ffa4 in QApplication::notify () from /usr/lib/qt4/libQtGui.so.4
#18 0xb76fdf6a in KApplication::notify (this=0x805bfd8, receiver=0x80e13b8, event=0xbf8b24b4) at /home/kde-devel/kde/src/KDE/kdelibs/kdeui/kernel/kapplication.cpp:307
#19 0xb669ea2c in QCoreApplication::notifyInternal () from /usr/lib/qt4/libQtCore.so.4
#20 0xb6ed9c54 in QGraphicsView::mousePressEvent () from /usr/lib/qt4/libQtGui.so.4
#21 0xb69a0430 in QWidget::event () from /usr/lib/qt4/libQtGui.so.4
#22 0xb6cccb72 in QFrame::event () from /usr/lib/qt4/libQtGui.so.4
#23 0xb6d5c558 in QAbstractScrollArea::viewportEvent () from /usr/lib/qt4/libQtGui.so.4
#24 0xb6eda97f in QGraphicsView::viewportEvent () from /usr/lib/qt4/libQtGui.so.4
#25 0xb6d5d8e2 in ?? () from /usr/lib/qt4/libQtGui.so.4
#26 0xb669ed18 in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/qt4/libQtCore.so.4
#27 0xb694b537 in QApplicationPrivate::notify_helper () from /usr/lib/qt4/libQtGui.so.4
#28 0xb69501c6 in QApplication::notify () from /usr/lib/qt4/libQtGui.so.4
#29 0xb76fdf6a in KApplication::notify (this=0x805bfd8, receiver=0x8384a70, event=0xbf8b2b30) at /home/kde-devel/kde/src/KDE/kdelibs/kdeui/kernel/kapplication.cpp:307
#30 0xb669ea2c in QCoreApplication::notifyInternal () from /usr/lib/qt4/libQtCore.so.4
#31 0xb694dd1b in QApplicationPrivate::sendMouseEvent () from /usr/lib/qt4/libQtGui.so.4
#32 0xb69b246d in ?? () from /usr/lib/qt4/libQtGui.so.4
#33 0xb69b1015 in QApplication::x11ProcessEvent () from /usr/lib/qt4/libQtGui.so.4
#34 0xb69d6e91 in ?? () from /usr/lib/qt4/libQtGui.so.4
#35 0xb558d3c5 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0