Tue, 9 May 2006 06:25:05 UTC, "J M Schlatter" wrote:

Normally, I do not switch off my PC but suspend it in the night.

Good way to increase the profit of the electricity suppliers, especially
in the monopolit dominated German market. ;-)

When firefox 1.5.x (also PmW-Fx!) runs for a few days with a few open
tabs, suddenly it beeps and the display gets a little bit strange.
Then it beeps again and images and text mostly disappear, the
background remains black with a few black spots.

Sudden beeps always remind me of hardware problems of some kind.

Does anybody else see this problem? It could be a memory leak.
(Not necessarily in FF, but maybe in my scitech snap driver or in
innoteks font rendering engine).

Yes, older Innotek Font Engine versions had massive memory leaks in
certain situations. The current version (still beta?) seems to be much
better.