Some days ago I wrote about memory's problem with my ISA Server. Now I have received results of monitoring. System stops responding requests with 330 MB (1046 installed) RAM, 60 GB free space on a hard disk and 5% CPU Usage ! Can somebody explain this? Can somebody recommend me a good article about structure and manipulating WIN2K's memory (except WIN2K help)? Of course I read about configuring File and printer sharing for Microsoft networks, but I am sure that is not all. All writes about Pages\sec , but nobody about manipulating kernel's nonpaged poll or others ! I saw handles growing of W3PROXY service , but I think it is normal because ISA's cache is growing. What is a normal situation for ISA ? Best Regards Andrey Silkin