Application that crashed: kget
Version of the application: 2.3.0
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-1-686-bigmem i686

What I was doing when the application crashed:
After restarting KDE, Kget tries to download an already finished download from scratch. After cancellation, Kget crashes.

 -- Backtrace:
Application: KGet (kget), signal: Segmentation fault
[KCrash Handler]
#6  0xb795589a in TransferHandler::changesFlags(TransferObserver*) const () from /usr/lib/libkgetcore.so.4
#7  0xb7948a3e in TransferTreeModel::timerEvent(QTimerEvent*) () from /usr/lib/libkgetcore.so.4
#8  0xb6a47b6f in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#9  0xb6f1c7d4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#10 0xb6f2493e in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#11 0xb7e1700d in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#12 0xb6a3796b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#13 0xb6a66301 in ?? () from /usr/lib/libQtCore.so.4
#14 0xb6a628a0 in ?? () from /usr/lib/libQtCore.so.4
#15 0xb5fdb368 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#16 0xb5fde8c3 in ?? () from /usr/lib/libglib-2.0.so.0
#17 0xb5fdea48 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#18 0xb6a627f8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#19 0xb6fbbf85 in ?? () from /usr/lib/libQtGui.so.4
#20 0xb6a35fba in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#21 0xb6a36402 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#22 0xb6a38859 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#23 0xb6f1c657 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#24 0x0809f6b5 in _start ()

Reported using DrKonqi