[ErickTreetops]

This seems to happen using VAAPI (hardware acceleration) with some hardware.
I have same issue on Sandy Bridge machine while it works better on other machines.
I think it has something to do with the interlacing because changing from hardware deintercing to something like software BOB fixes that problem.

Thanks for the reply.  Doesn't  always buffer.  Weird thing is Comskip has started removing commercials from my TV recordings. But only the late Show with Steven Colbert.  Not Supposed to work and didn't before.  But I was lazy and left it on the HTPC.