I have two servers at a client of mine. One is 2003 Small Bus. and the other is 2003 Enterprise running Terminal Server. The Enterprise server has run great for a couple of year, but over the past few weeks it has had increasing periods of really really slow performance. I don't see any obvious errors in the Event Log nor do I see any problems with CPU utilization ( Idle Process usually 90% whether it's running fast or slow). We've checked backup processes, disabled antivirus, etc. Any ideas where to look? Thanks.