So, I have this awesome Mac Pro now and I have to use Windows to watch DVD's. Play a DVD in Front Row, within 10 minutes, the computer hard locks. Watch the same DVD with the Apple DVD player, it will go a bit longer prior to locking up. Run the Tech Tool to check out memory and the whole system passes which of course doesn't mean there isn't a problem. So, I switch to Vista 64 and watch DVD's for as long as I want. Now in Leopard there have been no issues other than the system feels slower than it does in Vista. One other thing I have noticed is Vista 64 will really swell up it's memory footprint when you have boatloads of memory installed which really helps in the how it feels department. No disk noise at all, just smooth as glass and fast as hell. Since Apple doesn't believe in driver downloads like the rest of the world anybody have ideas on how to troubleshoot this in Leopard? As stated, works perfectly in Vista, goes belly up in Leopard. Have checked connections (just for giggles) and even tried a different drive, same result.