I recently upgrade my Dell Poweredge 2400 Dual 900 Mhz machine to NW OES
6.5 and it was running fine til this morning. I was receiveing errors
about cache being maxed out so I restarted the server and now Processor 0
is maxed out and it appears that something is really hitting the drives

How do I find out what could be happening?

Things are running so slow.