I really hope you can help me out on this one cause I've been banging my head on it all weekend. I have a windows 2003 server running Exchange 2003 e also have ISA server installed. Everything was fine until last Thursday when the server reported it had no more disk space available. That sounded strange so I removed some log files and some unused files freeing up about 8gig of data. The whole sytem went back to normal when all of a sudden I noticed the disk space going out rapidly at a rate of 1 gig per min. I thought someone was in our network so I disconnected the server isolating him still the space was being chewed up. I did a seach on modified files but nothing came up. Needless to say the server became really slow. Any Idea what this can be ? I checked the ttask manager and everything looked normal. We aslo have AVG installed and it did not detect any viruses on the system.