Still waiting for a working driver for the DisplayLink adapter. I've now given up and bought a 27 inch monitor instead.

Not good DisplayLink, not good (after a lot of badgering we did at least get them to put a note on the driver download page saying there are 10.8 problems).

Don't buy a DisplayLink adapter if you need to use Mountain Lion or value on going driver support in the future.

Now, where are all those Thunderbolt display adapters we were promised