Hello
I have WD TV HD (Gen.2).
Some mkv. does he not ab.de screen stays black and the Clock at 00.00.00.Eine next file (Avi) can then no longer abspielen.Erst to reset the system speilt (avi) again.
The best answer would be trying to get the latest firmware on that unit.
See if this helps with your MKV issue.
http://community.wdc.com/t5/ideas/v1/ideapage/blog-id/idea/article-id/2698
