Version:            (using KDE 4.0.4)
Installed from:    Ubuntu Packages
OS:                Linux

Every time I press ctrl+enter from the open composer window Kontact crashes.
this part of the readout I get after the crash:


[Thread debugging using libthread_db enabled]
[New Thread 0x7f4fc064e6f0 (LWP 5066)]
[New Thread 0x42d77950 (LWP 5070)]
[New Thread 0x42576950 (LWP 5069)]
[New Thread 0x41d75950 (LWP 5068)]
[New Thread 0x41574950 (LWP 5067)]
)
[KCrash handler]
#5  0x00007f4fb13dbfec in KMHeaders::selectedSernums ()
   from /usr/lib/libkmailprivate.so
#6  0x00007f4fb15709ac in KMMainWidget::updateMessageActions ()
   from /usr/lib/libkmailprivate.so
#7  0x00007f4fb157e2db in KMMainWidget::qt_invoke ()
   from /usr/lib/libkmailprivate.so
#8  0x00007f4fba93dfd0 in QObject::activate_signal ()
   from /usr/lib/libqt-mt.so.3
#9  0x00007f4fba93eb4e in QObject::activate_signal ()
   from /usr/lib/libqt-mt.so.3
#10 0x00007f4fbacb8496 in QTimer::timeout () from /usr/lib/libqt-mt.so.3
#11 0x00007f4fba963d83 in QTimer::event () from /usr/lib/libqt-mt.so.3
#12 0x00007f4fba8d633a in QApplication::internalNotify ()
   from /usr/lib/libqt-mt.so.3
#13 0x00007f4fba8d8093 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#14 0x00007f4fbc00c40d in KApplication::notify ()
   from /usr/lib/libkdecore.so.4
#15 0x00007f4fba86720e in QApplication::sendEvent ()
   from /usr/lib/libqt-mt.so.3
#16 0x00007f4fba8c9abc in QEventLoop::activateTimers ()
   from /usr/lib/libqt-mt.so.3
#17 0x00007f4fba87c107 in QEventLoop::processEvents ()
   from /usr/lib/libqt-mt.so.3
#18 0x00007f4fba8f05bf in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#19 0x00007f4fba8f02ab in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#20 0x00007f4fba8d7e00 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#21 0x0000000000419299 in ?? ()
#22 0x00007f4fb71031c4 in __libc_start_main () from /lib/libc.so.6
#23 0x0000000000418a59 in ?? ()
#24 0x00007fffc86810d8 in ?? ()
#25 0x0000000000000000 in ?? ()