Freezing on wd live player

Ihave got a wd live player and hav been using another one untill a recent upgrade.

Anyway I have this weird freezing thing that keeps happening. I have used wd lots in the past and have used the same mkv’s on this wd live and I have used them on a friends. I inistally thought that it was a problem with the player and so I returned it got a new one…same problem any advice would be great.

So, the files that exhibit the problem in your photo play OK on your friends’ WDTV, but they play poorly on TWO separate units for you?