This ongoing problem has has got me at my wits end. We are running 35 users on a Metaframe PS3.0/ Server 2003 environment. Everything seemd fine until a few weeks ago. We are experiencing periodical lockups and slowdowns with various apps. We are running a dual XEON 3.0 with 4GB RAM. I have just aded the RAM, changed the Virtual memory, uninstalled and reinstalled the NIC drivers, ran a Spyware and Virus check, move the server to a different hub, etc. but still can not find the problem. We have various other workstations that are not on the Citrix server accessing the same apps and they seem fine. I did install the latest MFPS30 Hotfix last week as I noticed we were getting print jobs stuck in the spooler which would cause the lockups, etc. That seems to have gotten better but the lockups, slowness continues. Any ideas anyone? Any good free monitoring tools out there?