I HAVE THE SOLUTION...

The user's network connection was disconnected by a hyster, cutting through a ceiling cable. Rather than tell anyone aboutthis, the user "repaired it" himself. (Said he used scissors and tape.)

When I went to check it out... Found two wires crossed!

Replaced damaged cable run, and everything works fine.

(wish user had told me this two dayts ago.)

Thanks for all your help,

Mike