Getting Out of Memory errors at random intervals.

[Andrew Brink]

Hi. I've been getting random Out of Memory: Killing Processs pid (name)
On _two_ different boxes. One is running 2.4.16 while the other 
is 2.4.17.  Most of the time the process that gets killed is apache
(these boxen are webservers) but sometimes its mysql, exim, htdig and
others.

These boxes used to be rock stable, and now they get the OOM error at
random periodic times.

Is there anything I can check for, or do to clear this up?

Any help would be greatly appreciated.
Thanks,
Andrew Brink