being through another intensive mixing session, I can post here some more updates about the AU64bit.
First of all the good news is that from my tests seems much lighter on cpu than the same plugin/program/setting used with the Au32bit bridged..that's surprising and very promising for when the bugs will be amended.
I think it's important to remember here that there's a 64bit Mac version ONLY for the Nebula Server at the moment, don't know if AA will do one of the Pro..anyway I can say the server version seems to be more efficient (and now I don't work or earn money from AA!).
In terms of crashes, it's very random..sometimes it goes for hours, sometimes it crashes after loading a program. All recommendation of use that I posted before are still valid, and in the end I found myself using the 32bit bridged if I need to audition several programs (or to tweak/edit/save the program inner settings), but when I know what I need and it's just about tweaking a program or just having the sound I load the AU64bit and no crashes at all
AITB are aware now that their password protected libraries don't work with Nebula Server 64bit on Mac, hopefully very soon AA will fix this and the graphic interface issues/crashes..and the dream of all Logic users will be completely true! In the meantime let's hope the AU64bit will arrive soon in the downloads for everyone.