Have an Exchange 2003 server with about 50 Entourage clients connecting to it. The server recently has slowed down and disk access is very slow. When I run filemon to see what is using all the disk i/o I find that it the store accessing the .stm database file that the Entourage clients connect to. We are seeing disk read/write latency of almost .5 seconds. If we turn http access off to the server then the disk catches up and runs like a top. When we re-enable http access it goes back to have huge latency and the i/o is all aimed at the .stm database. All users have spotlight turned off as far was we know. Our guess is there is a Entourage client doing something odd. Any ideas?