My oes2 server has been running fine for months
Now all of a sudden I get when logging in from any workstation

a required network service has not started.
please check your error log for details.

What error log it isn't logged in /var/log/messages

I can ssh via putty fine.
I can connect fine via imanager.

But I can no longer log in with the netware client.
Somebody please help. I don't even know where to begin looking.
If I knew how to tell which service isn't running maybe I could manually start it. Where is the error log I need to read.