Don't know if this is the place for this or not.
Just thought I'd let you guys know that I think v.12 is amazing.
I switched to Mac back in July and haven't had any reason to use a PC. I checked in a couple weeks ago and low and behold here I was on the MC12 beta list. So I figured I'd give it a shot. I borrowed my friends HP and took it for a spin.
I have to say, v.12 is a HUGE improvement over what was already amazing app. After toying around with it for about an hour, it made me wish for a OS X port of MC.
Overall, I didn't run into any bugs. I'm sure they exist but I'm not the type of power user that would run into many, if any, show stopping bugs. Things imported fine. Libraries listed fine. Images displayed perfectly. Playback was perfect from what I could tell.
I'll be checking back in periodically to see how things are improving. I might even Boot Camp this thing with Windows XP just so I can install and help you guys test MC12.