Application that crashed: dolphin
Version of the application: 1.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I tried to copy and open a zip-file but KDM didn't react anymore but crashed.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[KCrash Handler]
#6  0xb65daca7 in QMutex::lock () from /usr/lib/libQtCore.so.4
#7  0xb66d4877 in QCoreApplication::postEvent () from /usr/lib/libQtCore.so.4
#8  0xb66d4b3c in QCoreApplication::postEvent () from /usr/lib/libQtCore.so.4
#9  0xb66e43f7 in QObject::deleteLater () from /usr/lib/libQtCore.so.4
#10 0xb697635e in QDragManager::timerEvent () from /usr/lib/libQtGui.so.4
#11 0xb66e516f in QObject::event () from /usr/lib/libQtCore.so.4
#12 0xb68ebd3c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#13 0xb68f403e in QApplication::notify () from /usr/lib/libQtGui.so.4
#14 0xb763285d in KApplication::notify () from /usr/lib/libkdeui.so.5
#15 0xb66d4bcb in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#16 0xb6703d51 in ?? () from /usr/lib/libQtCore.so.4
#17 0xb67003a0 in ?? () from /usr/lib/libQtCore.so.4
#18 0xb5e50b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#19 0xb5e540eb in ?? () from /usr/lib/libglib-2.0.so.0
#20 0xb5e54268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#21 0xb67002f8 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#22 0xb698da75 in ?? () from /usr/lib/libQtGui.so.4
#23 0xb66d31fa in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#24 0xb66d3642 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#25 0xb66d5ae9 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#26 0xb68ebbb7 in QApplication::exec () from /usr/lib/libQtGui.so.4
#27 0x0807aaff in _start ()

Reported using DrKonqi