Sorry to say, i too have this issue. I watched quite a few TV shows and Films over the weekend, and most were skipping to the next file after about 20mins.

My setup is all cabled, and while the TV isnt gigabit, all other devices are Gigabit. Not only that, the only devices powered up were my server (HP ProLiant N40L) and my TV (LE40C650). The server has no other function apart from Mezzmo.

The files were all MKVs and were mostly 1.3gb 720p TV shows.

Happy to grab logs etc but they might be a little on the big side since it can take 20-30mins to happen, and it may not happen.

Happy to test any patch if you would like.
cheers

Gus