I've been reading on other forums about problems with playback of some newer DVDA's. It appears the record industry, in their infinite wisdom, monkeyed with the anti-copy system and is not compatible with the 563. Now if you want the upgrade you must send your unit to a tech center. Pioneer won't mail out cd's to run the upgrade at your home. It looks like the units manufactured after 1/04 are ok. More info at this thread: http://www.quadraphonicquad.com/foru...ead.php?t=3020 Anyone else heard of this? Or have had playback issues? There's alot of unhappy campers out there. I haven't had problems yet. Although I will occasionally get a very loud electronic sounding click at seemingly random times. Others who have had that said the firmware upgrade appears to have eliminated that as well. Not sure what I'll do yet.