I have a 1.8Ghz Core Duo Mac mini with 2 GB of RAM. Recently bought a 40" HDTV and started to watch 720p TV shows on it. The Mac mini plays the 720p perfectly but in some stages of the 720p (especially in fast moving scenes) the Mac mini begins to stutter the video playback. Is anyone else having this issue? Can one fix the stuttering? or is it just the fact that the hardware is being pushed to its limit. Thanks, Addict.