Application that crashed: kontact
Version of the application: 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 x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
kontact crashes after clicking on a specific email with a big attachment. It begins to load the first picture an than crashes.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  QBuffer::readData (this=<value optimized out>, data=0x20c21b8 "\002", len=16384) at io/qbuffer.cpp:412
#6  0x00007fe7c8b348e0 in QIODevice::read (this=<value optimized out>, data=<value optimized out>, maxSize=<value optimized out>) at io/qiodevice.cpp:799
#7  0x00007fe7c8b356d3 in QIODevice::read (this=0x7fffd7e9f080, maxSize=4) at io/qiodevice.cpp:918
#8  0x00007fe7c8b37ec5 in QIODevice::peek (this=0x0, maxSize=16384) at io/qiodevice.cpp:1444
#9  0x00007fe7b7a56ab3 in QTiffHandler::canRead (device=0x0) at qtiffhandler.cpp:124
#10 0x00007fe7b7a56c4e in QTiffHandler::canRead (this=0x1b8dc10) at qtiffhandler.cpp:108
#11 0x00007fe7b7a5652c in QTiffHandler::read (this=0x0, image=0x0) at qtiffhandler.cpp:131
#12 0x00007fe7c9569253 in QImageReader::read (this=0x7fffd7e9f0b0, image=0x20f75f8) at image/qimagereader.cpp:1077
#13 0x00007fe7c7abf102 in khtmlImLoad::QImageIOLoader::processEOF (this=0x20f75e0) at ../../khtml/imload/decoders/qimageioloader.cpp:76
#14 0x00007fe7c7ab602a in khtmlImLoad::Image::processEOF (this=0x20b9a00) at ../../khtml/imload/image.cpp:211
#15 0x00007fe7c79c4a1f in khtml::Loader::slotFinished (this=0x1094250, job=0x20ba200) at ../../khtml/misc/loader.cpp:1461
#16 0x00007fe7c79caf93 in khtml::Loader::qt_metacall (this=0x1094250, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd7e9f340) at ./loader.moc:131
#17 0x00007fe7c8babddc in QMetaObject::activate (sender=0x20ba200, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x20f75f0) at kernel/qobject.cpp:3113
#18 0x00007fe7c8f81af2 in KJob::result (this=0x0, _t1=0x20ba200) at ./kjob.moc:188
#19 0x00007fe7c8f81e6f in KJob::emitResult (this=0x20ba200) at ../../kdecore/jobs/kjob.cpp:304
#20 0x00007fe7c700ad93 in KIO::SimpleJob::slotFinished (this=0x20ba200) at ../../kio/kio/job.cpp:477
#21 0x00007fe7c700b253 in KIO::TransferJob::slotFinished (this=0x20ba200) at ../../kio/kio/job.cpp:948
#22 0x00007fe7c7009b61 in KIO::TransferJob::qt_metacall (this=0x20ba200, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd7e9f760) at ./jobclasses.moc:343
#23 0x00007fe7c8babddc in QMetaObject::activate (sender=0x1c58e00, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x20f75f0) at kernel/qobject.cpp:3113
#24 0x00007fe7c70cba81 in KIO::SlaveInterface::dispatch (this=0x1c58e00, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:175
#25 0x00007fe7c70c8333 in KIO::SlaveInterface::dispatch (this=0x1c58e00) at ../../kio/kio/slaveinterface.cpp:91
#26 0x00007fe7c70bb14d in KIO::Slave::gotInput (this=0x1c58e00) at ../../kio/kio/slave.cpp:322
#27 0x00007fe7c70bd26c in KIO::Slave::qt_metacall (this=0x1c58e00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd7e9fb20) at ./slave.moc:76
#28 0x00007fe7c8babddc in QMetaObject::activate (sender=0x1f77240, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x20f75f0) at kernel/qobject.cpp:3113
#29 0x00007fe7c6fd7f57 in KIO::ConnectionPrivate::dequeue (this=0x1f77380) at ../../kio/kio/connection.cpp:82
#30 0x00007fe7c6fd807d in KIO::Connection::qt_metacall (this=0x1f77240, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x1f78cd0) at ./connection.moc:73
#31 0x00007fe7c8ba60f9 in QObject::event (this=0x1f77240, e=0x1d01ee0) at kernel/qobject.cpp:1111
#32 0x00007fe7c94b6efc in QApplicationPrivate::notify_helper (this=0xfefc20, receiver=0x1f77240, e=0x1d01ee0) at kernel/qapplication.cpp:4056
#33 0x00007fe7c94be1ce in QApplication::notify (this=0x7fffd7ea04e0, receiver=0x1f77240, e=0x1d01ee0) at kernel/qapplication.cpp:4021
#34 0x00007fe7ca0edab6 in KApplication::notify (this=0x7fffd7ea04e0, receiver=0x1f77240, event=0x1d01ee0) at ../../kdeui/kernel/kapplication.cpp:302
#35 0x00007fe7c8b96c2c in QCoreApplication::notifyInternal (this=0x7fffd7ea04e0, receiver=0x1f77240, event=0x1d01ee0) at kernel/qcoreapplication.cpp:610
#36 0x00007fe7c8b9780a in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0xfb8080) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#37 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0xfb8080) at kernel/qcoreapplication.cpp:1247
#38 0x00007fe7c8bbf533 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#39 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:210
#40 0x00007fe7c2411bce in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#41 0x00007fe7c2415598 in ?? () from /lib/libglib-2.0.so.0
#42 0x00007fe7c24156c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#43 0x00007fe7c8bbf1a6 in QEventDispatcherGlib::processEvents (this=0xfb7cb0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#44 0x00007fe7c954b4be in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#45 0x00007fe7c8b95532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#46 0x00007fe7c8b95904 in QEventLoop::exec (this=0x7fffd7ea0420, flags=) at kernel/qeventloop.cpp:201
#47 0x00007fe7c8b97ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#48 0x0000000000403f47 in _start ()

Reported using DrKonqi