I have a NT Workstation 4.0 (SP6a) running as a firewall using CkeckPoint. I came in today and tried to log in but control/alt/delete would not bring up the log on prompt. I restarted the machine and now when it boots up I get an error that says "RpcSs.exe failed to initialize". After a couple of restarts now I get an error thats states netlog one services are not running. If I clear this error and try to log in again, the machine will just revert back to the log on prompt. Any ideas would be appreciated.