I hope you did the telnet from the "CPS server", and not your desktop.
Did you also telnet from the AVGGSSPPH server back to CPS?
The user you are talking about is the user with which platform agent is running in the OS.
What about the user you used to register the platform agent with the CPS?
Is that user locked? login enabled?
Have you tried stopping the process server in CPS, restart the platform agent in remote system, start the process server in CPS?
Is there any other information available in operator messages?
Also what was the last job that ran in this process server? was it successful?
or Did it fail at the same time when the memory error occurred?
Thanks
Nanda