I have also come into the problem described in http://lists.debian.org/debian-x/2001/debian-x-200110/msg00004.html which has been discussed in this list several times. I fixed it according to the message and it worked.
However I get a strange behaviour in KDE. if I launch an application which takes some time to load (for example kpackage), the window moves suddenly out of the desktop, or the kicker panel hides towards the left or I get context menus from the desktop just when I move the mouse over the screen (not clicking on any button). This unstable behaviour has appeared after upgrading my woody+sid system two days ago, and I still do not know if it is something related to X or to KDE. I think that kdm also shows this behaviour since the pointer jumps wildly from time to time in the screen. Has anybody experienced something similar? Pablo de Vicente KDE spanish translation team
