Just a quick question. We have a windows 2000 server running with SQL Server 2000 and an windows service we wrote. The server relies heavily on the use of stored procedures (they're executed about every 2 seconds). The problem is that the entire computer locks up momentarily every 2 hours on the dot. I'm quite certain that the windows service we are running doesn't do anything on a 2-hour schedule. I've also looked to see if there are any scheduled tasks on the windows side, and there are not. SQL Server has one scheduled task, but it runs every minute, which basically runs some stored procedures on a schedule (NOTE: None of these stored procedures runs every 2 hours). My question: Is there any SQL Server functionality that runs every 2 hours? I'm not familiar enough with SQL Server to know what goes on in the background. I was thinking that maybe SQL Server ran some process every 2 hours to clean up memory or something. Thanks!