Application that crashed: kget
Version of the application: 2.3.3
KDE Version: 4.3.3 (KDE 4.3.3)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-15-generic-pae i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Was trying to download a large .iso file from an authenticated site.  The file was stalling after a few kb (probably an issue with our firewall, we're investigating).  I decided to give up and delete the transaction.  Kget immediately crashed.

 -- Backtrace:
Application: KGet (kget), signal: Segmentation fault
[KCrash Handler]
#6  0xb60d57cb in __dynamic_cast () from /usr/lib/libstdc++.so.6
#7  0xb714ee72 in TransferTreeModel::isTransferGroup(QModelIndex const&) const () from /usr/lib/libkgetcore.so.4
#8  0xb714f9a6 in TransferTreeModel::parent(QModelIndex const&) const () from /usr/lib/libkgetcore.so.4
#9  0xb6245b93 in QModelIndex::parent (this=0x9adc9f0, parent=..., first=0, last=0) at kernel/qabstractitemmodel.h:369
#10 QAbstractItemModelPrivate::rowsAboutToBeRemoved (this=0x9adc9f0, parent=..., first=0, last=0) at kernel/qabstractitemmodel.cpp:546
#11 0xb624610f in QAbstractItemModel::beginRemoveRows (this=0x9adb7f0, parent=..., first=0, last=0) at kernel/qabstractitemmodel.cpp:2114
#12 0xb714f896 in TransferTreeModel::delTransfer(Transfer*) () from /usr/lib/libkgetcore.so.4
#13 0xb7143b04 in KGet::delTransfer(TransferHandler*) () from /usr/lib/libkgetcore.so.4
#14 0x0809a41e in _start ()

Reported using DrKonqi