I've noticed mine is more than warm -- it's hot! It seems only with DVD's, not CD's. When I take a DVD out of it, the disc is very hot. It may be because DVD's are in a lot longer than CD's, so CD's don't get as hot.
A few more things -- Frequently, with just under an hour left in a movie, the frame stops dead for a split section, then continues without problem.
Also, it seems that I have to hit the remote button twice to activate a function other than "Play." Other times, I barely brush my hand across the remote reaching for something else and apparently activate the "Stop" or "Pause." Sometimes I have to hit the power button several times to get it to turn on.
Just before seeing this post, I had decided to call Sony tomorrow about taking it in for warranty check. There's a Sony factory repair place about 40 minutes from me.
It's too bad, because the thing plays great. I run the audio through an Audio Alchemy DTI-EDP combo to my pre-processor and get great 2-channel and 5.1 sound. The picture on my Runco DTV-5800 is also superb.