I wonder if local ads are why my 30 second skip has been acting so glitchy lately when watching live (buffered) programming.
Sometimes, it will overshoot on the skip forward. Then, when you go back 10 seconds, it will go back 5 or 10 minutes - or even up to an hour, all the way to the start of the buffer.
I haven't really noticed any local insert ads though, and I could care less if they were HD, SD, RealPlayer, VHS, or just a static picture of a pineapple for 30 seconds. Either I'm watching a recording, have a buffer, or the TV is off and I'm doing something else.