I happen to chat with Jesse from AC (for another problem) and the pc he was working on did the sudden disconnect. He then looked around and initially said my netframe is old (it was 2.0)so we upgraded to 3.5. but when I upgraded another pc with the 3.5 it also did the same thing. So this wasn't the issue.
What Jesse did was chose the Ac xml file using the static IP address of the server it was on and this worked. I will let you know if at least this solution will stick.
I will also try turning off the autodisconnect.
Thanks.

Rene
IM Oswego, NY