I updated from 10.8.1 to 10.8.2 for my macbook pro retina with my external 27" thunderbolt display. Now when i connect to my thunderbolt display both screens are black now. I can only see my mouse pointer and sometimes little boxes of display. any idea what went wrong??
UPDATE: Just for the record the solution explained here worked for me. https://discussions.apple.com/thread/4318302?start=0&tstart=0 incase anyone find this thread :)