People should be aware of the fact that going from developer 10.7.2 to 10.7.1 doesn't work, at least not for my MacBook Pro 17" 2011 model, nor my MacBook Air 13" 2011 model.
I ran the reversioner, which normally should resolve in me being able to update from 10.7.0 into 10.7.1 without any problems (have never had trouble with doing this with Snow Leopard 10.6.x releases for instance) but with 10.7.1 it just allows me to get the update from Apple Software Update, but upon next boot things take forever and upon login I'm not able to move the cursor or write in the password, not even external mice and keyboard works.
Another funny note is by running the reversioner the OS X Lion 10.7.1 for MacBook Air 2011 models claims that I'm not running on compatible hardware when trying to update my MacBook Air 13" 2011 model... So I actually get the wrong 10.7.1 through Software Update instead, making the system not boot at all afterwards.
Time to make some TimeMachine restores I guess..