BTV 4, BTV 4 Link and Vista problems

[arandazz]

I've been having a few problems with BTV 4 / BTV 4 Link in Windows Vista.
See Sig for computer specs. Tuners are two theater 550 cards and a AverTV Combo card. (AverTV card is not setup in vista)

Problems:
1. When watching live TV or a recorded show on Link after about 15-30 minutes the audio & video will freeze (some times the audio will continue). The only way to resume is to exit to the main menu and go back into live TV or the recorded show. This seems to happen more when another show is recording.

2. When watching a recorded show on Link the server goes into stanby.

3. AverTV Combo PCIe ATSC can be installed but will not get any reception.

None of these problems exist in XP. If I run the server under XP the Vista Link machines work fine. I believe the problem is with the Vista Server.
I've tried disabling Screen Saver & Standby on the server - this solves #2 but does nothing else. I want the sever to automatically go into standy.

Has anyone found a solution to solve these issues?