what means that an update feature is "experimental"? ubuntu 12.04, windows 8... If install now (not download trial yet - 10/05) on my Mac the ubuntu 12.04 should run (all features) - 3GB/LION? LION exist in 32bit(how find what is?), core 2 duo machine (upgraded to it)? Parallels then what is best to install 32 or 64? 64bit parallels implies run both 32/64 guest OSs?