Can't find anything at the KB,

server is a nw 6.5/sp6 ( now ) was previously sp5,
runs GW, fileservices and some zen 6.5 apps.

What happens, within a week, is that jsock6x.nlm goes from approx
450 kb memory usage to now; 885 MB !!!

It looked Ok for approx 4 or 5 days, but now it's there again.
Server has 4 GB's of memory and so far,, at least for a couple of
day's more, there's enough available logical space, but won't last.

Any ideas ??