Thanks. Every little bit helps.
1) No our Max Online hasn't changed since 03/31/08.
2) We finally got back on line by turning OFF the FastCGI function.
3) An SA at the hosting company finally admitted that he upped the PageFile setting.
Currently set at:
max_user_connections set to 100
max_connections=300 set to 300
After four days of relative calm, some users still experience some slowdowns and error messages, but most are doing okay.
I'm thinking about moving to a VPS. Does anyone have experience with hosting UBB and the MySQL db on the same server??