My work computer has an 80 gig hard drive and is practically brand new. The main program that I work on is a CAD type Kitchen and Bath design program called 20\20. Compared to AutoCAD, the files that I create are relatively small in size, in fact, my entire drawing folder archive is less than 5 gigs in size; yet, over the past couple of weeks, my memory usage has gone from 25% full to 75% full, and I can't figure out what is using up all that memory. Is there a way to trace memory usage so that I can determine what is using it all up so quickly??? Please advise!!! Thanks! There are 55 processes running... most of which I recognize. The ones taking up the biggest chunks of memory are as follows, (over 10,000 k): design.exe avgrssvc.exe iexplore.exe svchost.exe explorer.exe MsMpEng.exe SUService.exe cssauth.exe I have AVG antivirus and Microsoft Firewall running 24/7, plus I use additional antispyware programs daily to remove adware and spyware.