I've experiensed the same phenomenon. I've thought it might be the twinview code which leaks memory, since it's maybe not that commonly used.
At least it's some part of the X or nvidia-module which does leak memory seariously.
It's not only because of caching, since the OS has started killing processes when it's really out of memory. When I restart X-server, I'll often see (in xosview for example) that about 800MB/1GB freed up.
I'm using kernel 2.4.20, nvidia driver: 1.0-4191. I've used kde 3.0.5 and 3.1.
Graphics card: GeForce4 Ti4200
I would really like a fix..
Last edited by kickus; 02-13-03 at 12:28 PM.