Thunderbolt Software and Display Updates
If you have a Thunderbolt-equipped Mac or a Thunderbolt Display, you’ll want to install Apple’s just-released Thunderbolt Software Update, available for both Mac OS X 10.7 Lion (60.3 MB) and 10.6 Snow Leopard (65.5 MB). Apple says it provides support for the Thunderbolt Display and bug fixes for Thunderbolt devices. Also new is the Thunderbolt Display Firmware Update (923 KB), which improves the stability of the Thunderbolt Display. This last update comes in the form of an updater application that will be installed in /Applications/Utilities
and will
be launched automatically. (Free)
The updates have not fixed all the problems with Thunderport on the new MacMinis. Most of the 11 we purchased still do not connect to the monitor in the thunderport when they wake from sleep. Monitors in the HDMI port work as expected.
This seems to have fixed the flicker on my 2011 MacBook Air internal display.