Application that crashed: konqueror
Version of the application: 4.3.2 (KDE 4.3.2)
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-20-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I was setting up the KDE Microblog,   and Konquerer must have been auto-launched by something (because I was using firefox, and had not manually launched Konqueror).  It then crashed and asked me if  I wanted to submit a bug report.  So, here you go.

 -- Backtrace:
Application: Konqueror (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#6  0x0074bf4d in KIO::Slave::deref() () from /usr/lib/libkio.so.5
#7  0x0074caf6 in KIO::Slave::gotInput() () from /usr/lib/libkio.so.5
#8  0x0074eee3 in KIO::Slave::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkio.so.5
#9  0x00265263 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#10 0x00265ec2 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#11 0x00656f97 in KIO::Connection::readyRead() () from /usr/lib/libkio.so.5
#12 0x00658d5e in ?? () from /usr/lib/libkio.so.5
#13 0x00658e8e in KIO::Connection::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkio.so.5
#14 0x0025df0b in QMetaCallEvent::placeMetaCall(QObject*) () from /usr/lib/libQtCore.so.4
#15 0x0025f5fe in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#16 0x01105f54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#17 0x0110d67c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#18 0x00e25bfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#19 0x0024f6cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#20 0x002502b2 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#21 0x0025047d in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
#22 0x0027a3ff in ?? () from /usr/lib/libQtCore.so.4
#23 0x08fb6e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#24 0x08fba730 in ?? () from /lib/libglib-2.0.so.0
#25 0x08fba863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#26 0x0027a02c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#27 0x011a6be5 in ?? () from /usr/lib/libQtGui.so.4
#28 0x0024dc79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#29 0x0024e0ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#30 0x0025053f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#31 0x01105dd7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#32 0x02d4159f in kdemain () from /usr/lib/libkdeinit4_konqueror.so
#33 0x0804dde1 in _start ()

Reported using DrKonqi