I am getting utilization increases after a few days of running a dedicated
ifolder server on 6.5 Sp4. its also runing netstroage. When I try to shut
down, I end up with dozens of open threads that apache is waiting on. Is
there some way to avoid this situation or to force the threads to close?

Its a multiprocessor box, it seems to not be a memory leak, theres lot of
memory available and th rest of the server health is in the green.

Will loading ifolder in protected memory space really avoid this? Its a
new install only 2 weeks old.