Version:           1.9.4 (using KDE 3.5.4, Kubuntu Package 4:3.5.4-0ubuntu2~dapper1 )
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.15-26-386

Kontact crashes each time when i shutdown kontact.
It happens only when i'm in the e-mail mode.
(So, when i push the calendar and then quit the program everything is still ok)

The problem started when i had 4 icons of the bogofilter and tried to remove 2 of them...

The backtrace;

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Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1242658592 (LWP 13252)]
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[KCrash handler]
#6  0x00007361 in ?? ()
#7  0xb679f72a in KXMLGUI::ActionList::unplug () from /usr/lib/libkdeui.so.4
#8  0xb6808835 in KXMLGUI::ContainerNode::unplugClient ()
   from /usr/lib/libkdeui.so.4
#9  0xb6808ac9 in KXMLGUI::ContainerNode::unplugActions ()
   from /usr/lib/libkdeui.so.4
#10 0xb6808e55 in KXMLGUI::ContainerNode::destruct ()
   from /usr/lib/libkdeui.so.4
#11 0xb680903e in KXMLGUI::ContainerNode::destructChildren ()
   from /usr/lib/libkdeui.so.4
#12 0xb6808e43 in KXMLGUI::ContainerNode::destruct ()
   from /usr/lib/libkdeui.so.4
#13 0xb68a32ed in KXMLGUIFactory::removeClient () from /usr/lib/libkdeui.so.4
#14 0xb7d634b6 in KParts::MainWindow::createGUI ()
   from /usr/lib/libkparts.so.2
#15 0x08062955 in ?? ()
#16 0x0812dd60 in ?? ()
#17 0x00000000 in ?? ()


It happend also with kde 3.5.3.