As to how SSL will run on it - tests on previous developer builds of Leopard haven't shown up any problems, to my knowledge. But as has been said, let someone else be the guinea pig. Don't throw Leopard on the laptop you use for gigs right after it's released. Wait for someone else to find out what major bugs are still left in Leopard when it comes out.

Although it looks like we've got a few people here offering themselves as guinea pigs already ;) We'll definitely be giving it a thrashing here at Serato too once it goes final. Although the final build supposedly should be very similar to the development builds we've already tested against.