[allan87]

...alas I am now getting a drift of lipsync of approx 500ms over a 2hr period?

I did not notice a drift (a gradually shifting loss of sync), but did notice that audio was a fraction of a second off in a 1 hr MythTV recording, played back with the myth plugin. I'll check an earlier, previously watched recording that was OK, and post if further viewing reveals anything different.

Well, I watched
- a show that was .5 seconds off at the beginning, and became synched at some point in the middle;
- another show that was in perfect sync throughout.

There may be an intermittent sync issue but I don't see drifting.