Are you on the kernel mailing list? 
Is this likely related to the known problems with VM that have been
discussed there?

http://www.uwsg.indiana.edu/hypermail/linux/kernel/0108.1/0594.html
http://kt.zork.net/kernel-traffic/kt20010618_122.html#1

Andy

On Wed, 15 Aug 2001, Bob Tanner wrote:

> Quoting Jay Kline (list at slushpupie.com):
> > I agree..  I have found that even with 384M memory I almost never touch swap,
> > and that is with several X servers running (those little memory hogs)..  128M
> > swap is what I have, I found anything more than that is wasted space.
> 
> % free
>              total       used       free     shared    buffers     cached
> Mem:        516952     438608      78344     176652      75208     161940
> -/+ buffers/cache:     201460     315492
> Swap:       546048     466048     538300
> 
>