Application that crashed: dolphin
Version of the application: 1.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.3
Operating System: Linux 2.6.31-sabayon x86_64
Distribution: "Gentoo Base System release 2.0.1"

What I was doing when the application crashed:
switched back to dolphin from different desktop using alt-tab from compiz fusion caused a crash.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f512be2ce8c in QMutex::lock() () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007f512c214039 in ?? () from /usr/lib64/qt4/libQtDBus.so.4
#7  0x00007f512790a0bd in ?? () from /usr/lib/libdbus-1.so.3
#8  0x00007f512791c29d in ?? () from /usr/lib/libdbus-1.so.3
#9  0x00007f512790ddfe in ?? () from /usr/lib/libdbus-1.so.3
#10 0x00007f512c1f43e7 in ?? () from /usr/lib64/qt4/libQtDBus.so.4
#11 0x00007f512bf130a3 in QObject::event(QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#12 0x00007f512b4a749c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#13 0x00007f512b4acd38 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#14 0x00007f512cad9626 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#15 0x00007f512bf050ac in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#16 0x00007f512bf2bfc2 in ?? () from /usr/lib64/qt4/libQtCore.so.4
#17 0x00007f512bf299cd in ?? () from /usr/lib64/qt4/libQtCore.so.4
#18 0x00007f51272466fe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#19 0x00007f512724a0b8 in ?? () from /usr/lib/libglib-2.0.so.0
#20 0x00007f512724a1e0 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#21 0x00007f512bf29916 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#22 0x00007f512b52cace in ?? () from /usr/lib64/qt4/libQtGui.so.4
#23 0x00007f512bf03ac2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#24 0x00007f512bf03c65 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#25 0x00007f512bf05a79 in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#26 0x0000000000439c85 in _start ()

Reported using DrKonqi