It takes WAY too long to lock onto the audio codec. If I'm watching TV and FF it takes ~2 seconds to start playing audio again. I've fixed the problem by changing my settings on the computer to process the audio and send it out via PCM for just TV. Movies are still decoded. Sometimes it likes to freak out and not display a picture (only twice ever). Sometimes it will have green horizontal likes on the picture until I power the unit off and on again (lots more than twice).
Don't get me wrong, it is a great unit for what I paid (40% of MSRP). Loads of features I'll never use (THX, DTS Neo 6, etc). Lots of power on tap, runs cool (shocking), pure direct for music is nice. Audyssey features are nice, but do odd things to music IMHO. OSD is nice. Ability to control with serial and HTTP commands is really great, but http is quirky.