Corrupted windows in KDE after last upgrade in debian/testing

[wzab <wzab@ise.pw.edu.pl>]

Hi,

After last upgrade of my machines, one of them shows strange windows 
layout in KDE sessions. I attach the photograph (unfortunately in the 
screen dump performed with "import" utility the effect was not visible,
but import complained about "too much input data").
What's interesting, problem does not occur in the LXDE session, and it 
appears only in one of my machines - the one which uses the "VGA 
compatible controller: Intel Corporation 82865G Integrated Graphics 
Controller (rev 02)"

Other machines - with newer Intel graphics chipsets work normally.
Whet can be the reason and cure for this problem?
--
TIA & Regards,
Wojtek

Attachment: corrupted_windows.jpg
Description: JPEG image