Dunno. Diablo - and trust me, I pretty much disliked OS2008 in its first iteration(s) - seems to iron out the wrinkles that bothered me... now if only the software would catch up - such as video chat via Skype. Memory usage is down, it's a tad bit faster, and some Flash heavy sites give it heck still. Like Meatloaf... two out of three ain't bad...