Apple still looking into lingering issues with 24-in. Cinema Display & Thunderbolt
Issues when connecting a 24-inch Cinema Display to a Thunderbolt port have persisted since the high-speed data and video port debuted early this year, but there is an indication that Apple is aware of the problem and working on a fix.
http://feeds.appleinsider.com/click.phdo?i=1ee30c4b45f8a0bc04816676372ba9cd
