Application that crashed: dolphin
Version of the application: 1.2.1
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-1-amd64 x86_64
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
Dolphin is unstable. It crashes intermittently, usually after it has been running for a while. There doesn't appear to be a consistent trigger. In this particular case, I was selecting the first of a list of files I was going to move to another folder. I've experienced a number of prior crashes and can't really see much in common.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[KCrash Handler]
#5  0x00007fa5850165a0 in QUrl::QUrl(QUrl const&) () from /usr/lib/libQtCore.so.4
#6  0x00007fa5862c34e9 in KUrl::KUrl(KUrl const&) () from /usr/lib/libkdecore.so.5
#7  0x00007fa587cb2b40 in KFileItem::url() const () from /usr/lib/libkio.so.5
#8  0x00007fa587ca1c24 in KDirModel::indexForItem(KFileItem const&) const () from /usr/lib/libkio.so.5
#9  0x00007fa587946b3a in KFilePreviewGenerator::Private::orderItems(KFileItemList&) () from /usr/lib/libkfile.so.4
#10 0x00007fa58794a611 in KFilePreviewGenerator::Private::updateIcons(KFileItemList const&) () from /usr/lib/libkfile.so.4
#11 0x00007fa58794b2bd in KFilePreviewGenerator::Private::updateIcons(QModelIndex const&, QModelIndex const&) () from /usr/lib/libkfile.so.4
#12 0x00007fa58794ba42 in KFilePreviewGenerator::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkfile.so.4
#13 0x00007fa585074682 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#14 0x00007fa5850aa2a7 in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&) () from /usr/lib/libQtCore.so.4
#15 0x00007fa587c9dd3c in KDirModel::itemChanged(QModelIndex const&) () from /usr/lib/libkio.so.5
#16 0x00007fa5879498a2 in KFilePreviewGenerator::Private::dispatchIconUpdateQueue() () from /usr/lib/libkfile.so.4
#17 0x00007fa587949a47 in KFilePreviewGenerator::Private::resolveMimeType() () from /usr/lib/libkfile.so.4
#18 0x00007fa58794b98a in KFilePreviewGenerator::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkfile.so.4
#19 0x00007fa58506ef68 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#20 0x00007fa58552c80d in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#21 0x00007fa58553486a in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#22 0x00007fa58687e43b in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#23 0x00007fa58505f51c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#24 0x00007fa585060164 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#25 0x00007fa585087f73 in ?? () from /usr/lib/libQtCore.so.4
#26 0x00007fa580fb186a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#27 0x00007fa580fb4eb8 in ?? () from /usr/lib/libglib-2.0.so.0
#28 0x00007fa580fb506c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#29 0x00007fa585087bff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#30 0x00007fa5855c364f in ?? () from /usr/lib/libQtGui.so.4
#31 0x00007fa58505dde2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#32 0x00007fa58505e1b4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#33 0x00007fa585060424 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#34 0x000000000044253d in _start ()

Reported using DrKonqi