Version:            (using Devel)
Installed from:    Compiled sources

Starting from no .kde4 files, I started KDE4 (version 4.00.80  on kubuntu), added the binary clock, went to the clock settings, enabled the "Show off leds" option, clicked OK and plasma crashed. This happens if I change any option (I tried all the tick boxes) and click OK for the binary clock applet. The backtrace is:

Application: Plasma Workspace (plasma), signal SIGFPE
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 0x7fc940dad7e0 (LWP 12240)]
[New Thread 0x42fe0950 (LWP 12637)]
[New Thread 0x41104950 (LWP 12499)]
[New Thread 0x41e45950 (LWP 12242)]
[New Thread 0x427df950 (LWP 12241)]
[KCrash handler]
#5  0x00007fc93416063a in ?? ()
   from /usr/lib/kde4/lib/kde4/plasma_applet_binaryclock.so
#6  0x00007fc94ada2dd9 in Plasma::Applet::paint ()
   from /usr/lib/kde4/lib/libplasma.so.2
#7  0x00007fc949557119 in ?? () from /usr/lib/libQtGui.so.4
#8  0x00007fc94955a3da in ?? () from /usr/lib/libQtGui.so.4
#9  0x00007fc94955ba54 in QGraphicsScene::drawItems ()
   from /usr/lib/libQtGui.so.4
#10 0x00007fc9495777bc in QGraphicsView::paintEvent ()
   from /usr/lib/libQtGui.so.4
#11 0x00007fc949082495 in QWidget::event () from /usr/lib/libQtGui.so.4
#12 0x00007fc949381a76 in QFrame::event () from /usr/lib/libQtGui.so.4
#13 0x00007fc949406169 in QAbstractScrollArea::viewportEvent ()
   from /usr/lib/libQtGui.so.4
#14 0x00007fc9495726f1 in QGraphicsView::viewportEvent ()
   from /usr/lib/libQtGui.so.4
#15 0x00007fc949407308 in ?? () from /usr/lib/libQtGui.so.4
#16 0x00007fc94a02240e in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/libQtCore.so.4
#17 0x00007fc949034520 in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#18 0x00007fc949039125 in QApplication::notify () from /usr/lib/libQtGui.so.4
#19 0x00007fc94a936561 in KApplication::notify (this=0x63d7d0, 
    receiver=0x9eea40, event=0x7fff5386ddf0)
    at /build/buildd/kde4libs-4.0.80/kdeui/kernel/kapplication.cpp:311
#20 0x00007fc94a022109 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#21 0x00007fc94908ac3c in ?? () from /usr/lib/libQtGui.so.4
#22 0x00007fc949085771 in QWidgetPrivate::drawWidget ()
   from /usr/lib/libQtGui.so.4
#23 0x00007fc949085e72 in QWidgetPrivate::paintSiblingsRecursive ()
   from /usr/lib/libQtGui.so.4
#24 0x00007fc949085385 in QWidgetPrivate::drawWidget ()
   from /usr/lib/libQtGui.so.4
#25 0x00007fc9491ce183 in ?? () from /usr/lib/libQtGui.so.4
#26 0x00007fc9491ce872 in ?? () from /usr/lib/libQtGui.so.4
#27 0x00007fc949082277 in QWidget::event () from /usr/lib/libQtGui.so.4
#28 0x00007fc949381a76 in QFrame::event () from /usr/lib/libQtGui.so.4
#29 0x00007fc9494066ed in QAbstractScrollArea::event ()
   from /usr/lib/libQtGui.so.4
#30 0x00007fc94956c399 in QGraphicsView::event () from /usr/lib/libQtGui.so.4
#31 0x00007fc94903454f in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#32 0x00007fc949039125 in QApplication::notify () from /usr/lib/libQtGui.so.4
#33 0x00007fc94a936561 in KApplication::notify (this=0x63d7d0, 
    receiver=0x9ed3b0, event=0x16dfbe0)
    at /build/buildd/kde4libs-4.0.80/kdeui/kernel/kapplication.cpp:311
#34 0x00007fc94a022109 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#35 0x00007fc94a02342b in QCoreApplicationPrivate::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#36 0x00007fc94a04b0b3 in ?? () from /usr/lib/libQtCore.so.4
#37 0x00007fc944d32262 in g_main_context_dispatch ()
   from /usr/lib/libglib-2.0.so.0
#38 0x00007fc944d35516 in ?? () from /usr/lib/libglib-2.0.so.0
#39 0x00007fc944d359af in g_main_context_iteration ()
   from /usr/lib/libglib-2.0.so.0
#40 0x00007fc94a04b3af in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#41 0x00007fc9490bd72f in ?? () from /usr/lib/libQtGui.so.4
#42 0x00007fc94a021585 in QEventLoop::processEvents ()
   from /usr/lib/libQtCore.so.4
#43 0x00007fc94a0216db in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#44 0x00007fc94a023729 in QCoreApplication::exec ()
   from /usr/lib/libQtCore.so.4
#45 0x00007fc94b438e8b in kdemain ()
   from /usr/lib/kde4/lib/libkdeinit4_plasma.so
#46 0x00007fc94b0e31c4 in __libc_start_main () from /lib/libc.so.6
#47 0x0000000000400649 in _start ()
#0  0x00007fc94b162b81 in nanosleep () from /lib/libc.so.6