Parallels does not support Two Thunderbolt Displays
I just purchased two Thunderbolt Displays, with the goal of running Mac OSX on the left display (primary with dock) and Parallels in Full Screen mode on the other.
Two problems:
(1) Parallels will only run full screen on the primary monitor - regardless of which screen it started from.
(2) Parallels in full screen mode on the primary blanks out the second monitor completely - rendering it useless.
So, I'm reduced to running in windowed mode, with the window as big as I can make it on the secondary display...
Bummer - I was looking forward to the illusion of two separate but interacting computers...