Application that crashed: yakuake
Version of the application: 2.9.6
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-15-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
When pressing F12 to open (drop-down) Yakuake, it crashes.  This has happened more than once.

 -- Backtrace:
Application: Yakuake (yakuake), signal: Segmentation fault
[KCrash Handler]
#5  0x00007fa6ab39a820 in Konsole::TerminalDisplay::paintFilters(QPainter&) () from /usr/lib/libkonsoleprivate.so
#6  0x00007fa6ab39be04 in Konsole::TerminalDisplay::paintEvent(QPaintEvent*) () from /usr/lib/libkonsoleprivate.so
#7  0x00007fa6b70377a0 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#8  0x00007fa6b6fe8efc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#9  0x00007fa6b6ff01ce in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#10 0x00007fa6b8754ab6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#11 0x00007fa6b7b40c2c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#12 0x00007fa6b703eb93 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#13 0x00007fa6b703f2f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from /usr/lib/libQtGui.so.4
#14 0x00007fa6b703e803 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#15 0x00007fa6b703f2f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from /usr/lib/libQtGui.so.4
#16 0x00007fa6b703e803 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#17 0x00007fa6b703f2f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from /usr/lib/libQtGui.so.4
#18 0x00007fa6b703e803 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#19 0x00007fa6b703f2f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from /usr/lib/libQtGui.so.4
#20 0x00007fa6b703e803 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#21 0x00007fa6b703f2f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from /usr/lib/libQtGui.so.4
#22 0x00007fa6b703e803 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#23 0x00007fa6b703f2f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from /usr/lib/libQtGui.so.4
#24 0x00007fa6b703f204 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from /usr/lib/libQtGui.so.4
#25 0x00007fa6b703f204 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from /usr/lib/libQtGui.so.4
#26 0x00007fa6b703e803 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#27 0x00007fa6b71b0e1e in ?? () from /usr/lib/libQtGui.so.4
#28 0x00007fa6b71b1159 in ?? () from /usr/lib/libQtGui.so.4
#29 0x00007fa6b70472ca in ?? () from /usr/lib/libQtGui.so.4
#30 0x00007fa6b7054abb in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#31 0x00007fa6b707dd0c in ?? () from /usr/lib/libQtGui.so.4
#32 0x00007fa6b3405bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#33 0x00007fa6b3409588 in ?? () from /lib/libglib-2.0.so.0
#34 0x00007fa6b34096b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#35 0x00007fa6b7b691a6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#36 0x00007fa6b707d4be in ?? () from /usr/lib/libQtGui.so.4
#37 0x00007fa6b7b3f532 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#38 0x00007fa6b7b3f904 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#39 0x00007fa6b7b41ab9 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#40 0x0000000000414df6 in _start ()

Reported using DrKonqi