Take a look using NT Filemon to see what the problem files are, this will help isolate which program is causing the excessive I/O. For example the MS Office Save dialog autocomplete does a complete file scan of the recent docs folder after every character that is typed. It could be a single user with thousands of files in this folder and it takes them several minutes to type in the filename. Be careful about using Filemon on a busy server, make sure to disable autoscroll and set the priority low. Trevor. -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of rick.mattingly@xxxxxxxxxx No memory constraints or processor bottlenecks. We have been trying to track down processes and see that Winlogon.EXE and Services.EXE do a ton of writing, but looking at other servers it seems to be normal. We have tried removing AV from 1 server to no avail. Servers are patched and latest BIOS and Firmware is applied. Recently we started experiencing extreme % disk utilization problems on all of our servers but 2. The hard drive will spike at 100% for minutes at a time. ******************************************************** This Weeks Sponsor: eg Innovations, Inc. Enabling Proactive Infrastructure Triage eG Innovations, Inc. is the leading provider of real-time monitoring and proactive triage solutions for IT Infrastructures. http://www.eginnovations.com/egcitrix.htm ********************************************************** Useful Thin Client Computing Links are available at: http://thin.net/links.cfm ThinWiki community - Excellent SBC Search Capabilities! http://www.thinwiki.com *********************************************************** For Archives, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: http://thin.net/citrixlist.cfm