I posted this question here earlier and non of the suggestions solved the problem. Here is what is happening:
I am running a Win 2000 Server on my machine. For some reason the C drive keeps loosing chunks of memory rappidly (a few M in a few hours span) as if being filled. I am running out of space and options rappidly.
Here is what it is not:
1. Known Virus (ran Norton AntiVirus 2000 with latest virus definitions)
2. Log files (deleted all larger .log files from the drive and monitoredtheir changes. They do not explain the loss)
3. Disk Physical Fault (ran the disk check utility in win 2000)
4. Other files (I monitored changes by a search for files created or modified in the last 1 day. There were a number of large files but their size does not change from one search to the next. Non of the files can explain where the space goes to.)
Since my initial problem I was forced to re-install Win 2000 Server through the Upgrade function of the CD. This returned 160M to me but the problem persists.