Version:           CVS from 20031111 (using KDE Devel)
Installed from:    Compiled sources
OS:          Linux

Notes on my system:
SuSE-8.2 with kde3.2-beta/CVS packages from APT sources on ftp.gwdg.de. Date/version code is 3.1.93_2003111111-0, qt-3.2.3

What happens:
Certain applications produce a gigantic memory leak in KWin (presumably, not really sure) by doing specific actions, as for example clicking the "new" button in kopete to add a new contact, or trying to change the background color of the desktop. It goes pretty fast, in a matter of seconds everything freezes, then kwin dies (i.e. all window borders dissapear) and the rest returns to normal (well, sorta).

How to reproduce (one example):
Open kopete (for the first time ever), and click the "New" button.

Expected behaviour:
A dialog should appear immediately, with a nice window border (I am using the keramik style, btw).

What happens instead:
During a few seconds, the system resources (RAM, Swap) are drained completely, then all window borders dissapear, and instantly RAM and Swap appear almost empty again, and then the expexted dialog pops up as normal, but without window borders (due kwin having died).

Notes:
I tend to believe that this memory leak lies in the kde core libs, hence my choice, but I might be wrong of course (sorry in that case).
Everything happens so fast, I don't really get a chance to see what process exactly runs away, but only kwin dies each time.