running MVPMC dongle 29.11.08. Did major rebuild a couple of weeks ago with GBPVR v1.4.7 been tweaking ever since!
What I have noticed is that all 3 of my MVP's stop playing LiveTV after a while and the screen goes black. BUT it hasn't locked up, if I change channel the video pops straight back up again. Not one of those hangs that can happen with the MVP, the video is still there but just black screen. The weirdest thing of all is I have worked out it happens at the end of a programme. If I am watching a 1/2 hr programme it goes black at the end of it, a feature film will keep going until that ends then go to black!
No logs attached in case this is a known thing but couldn't find a reference to it.