[kde-linux] Problem saving window locations/session management

[pkaplan1 at comcast.net]

I'm running mainly kde 3.5.9 on kubuntu 8.0.4.  After installing kde 4.1 (along side 3.5.9 with kubuntu debs), 3.5.9 fails to restore windows to the desktop they were originally on when a new session is started...all windows re-open on desktop 1 the next time 3.5.9 starts.

Because this happened on two different machines, I'm pretty sure it's a real problem (I filed a bug a few weeks back...no response), but it will be a bear to trace given the large number of packages that were installed w/ kde 4.1.  Not sure if it's a kde problem or a kubuntu package problem.

However my questions are:

1. Where does kde 3.5.9 save information about window locations when one leaves a session?
2. What program writes that file?
3. What program reads that file?

Paul