Just updated my Air an hour ago. So far I have 6 tabs opened, one on Apple.com. Tasked-switched to email and replied to one message, switched to app store and browse the top 20. Back into Safari and all 6 tabs are still there. Navigated around Apple.com to different sections, and the other 5 tabs were kept There seems to be a minor delay (one second or so) when switching back into Safari, which is fine. I think this is finally fixed. Now of course I didn't go nuts and open big apps and games. I'm content with being able to do what I did above without losing my browser tabs.