Well I downloaded and installed the upgrade to 3.5 before I saw the posts on the physics problem...

It's there alright and as opjose said, snaps are a problem and just try to get it into a spin! So I went back to the 3.0 and still have problems with the airplanes. The Patty Wagstaff Extra I got and use most for my IMAC practice won't even do a knife edge anymore in 3.0, so I went back to the 3.5.

I hope the patch is in the works as I don't really want to un-install everything and then go back with fresh installs of the whole 3.0 stuff and upgrade versions.