Version:           inconnu (using KDE 3.5.4, Kubuntu Package 4:3.5.4-0ubuntu2~dapper1 )
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.15-26-686

start ksnapshot
select to snap an area
start to snap
immediately after snapping the area kwin crashes :

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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 -1229252928 (LWP 18222)]
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[KCrash handler]
#6  0xb7ecbbdf in KWinInternal::Client::screen ()
   from /usr/lib/libkdeinit_kwin.so
#7  0xb7f06dce in KWinInternal::Workspace::activateNextClient ()
   from /usr/lib/libkdeinit_kwin.so
#8  0xb7f150be in KWinInternal::Workspace::workspaceEvent ()
   from /usr/lib/libkdeinit_kwin.so
#9  0xb7f15114 in KWinInternal::Application::x11EventFilter ()
   from /usr/lib/libkdeinit_kwin.so
#10 0xb708f457 in qt_set_x11_event_filter () from /usr/lib/libqt-mt.so.3
#11 0xb709c74c in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3
#12 0xb70b64db in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#13 0xb712a947 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#14 0xb712a86a in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#15 0xb7110965 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#16 0xb7f16a63 in kdemain () from /usr/lib/libkdeinit_kwin.so
#17 0xb7c74ea2 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#18 0x080483b1 in ?? ()