This is a school district. We have 600 PCs, 1800 students, and 200 staff members. We usually have 350-400 PCs in use at a time. All users have redirected My documents... no roaming profiles.
I have a windows 2k server that is my primary domain controller. It has been doing the same thing all year. In the past 2 weeks I have noticed slow client login times and the CPU usage is always 95-100%. Even at night when the server should be idle, the CPU is 85-90%. I have 3 identical servers (hardware wise) and the other 2 are running 30%.
I have scanned for a virus. I have checked for malware
This server is my print server, pdc, stores redirected documents, has a sql database for a cafeteria POS system. I have not added any databases or other load to this server.
The biggest process is LSASS.EXE (usually around 25%). Services.exe is using 7-10%
The server has 2 2.0Ghz XEON processors, 6Gb of memory, W2k Advanced Server. Hard drives are half full. I check all of the processor and cooling fans and they are running.
Please help! I don't know what else to check.