Can't pase in Terminal Server

I am running Terminal Server on W2K with SPK4, Mcafee virus scan (Compaq proliant G3, Xeon 2.4 2ghz ram, 40gig free space). This server has been running for a year and all was ok until this week. 1) Can cut, but can't paste. 2) Nothing return when properties is done on a file or folder. 3) Users can only access TS via Remote Desktop they get redirected when they use IE. 4) It takes about 1 min for desktop to load. Thanks in advance for any help.