Win2k Adv. Server /can’t reboot or logoff

If I log in to any account on the server I just can't log off most of the time, when I use log off or shutdown on the start menu I get the confirmation pop up but when I click Ok nothing happens, the pop up just goes away as if I would've hit Cancel.

Occasionally it will reboot or log off fine but it just do it when it wants to. So the only way to log off is to shutdown the server manually. Any ideas.?

Thanks in advance,

Thanks the only process running under the user account was explorer and killing it didn't help... I tried killing all processes I can kill but it didn't help...

Today I think I've figured, looks like it's a combination of Norton's real time scan and Titan FTP server and still killing the processes don't help but if I keep either one of them from starting at boot up then the problem doesn't happen...

I've had both of them running for a long time and didn't experienced this before, probably some norton's updates cuz I haven't got any updates for titan...

Thanks...