Just reinstalled Ubuntu 8.04 on my laptop — DEAR GOD, the sheer amount of problems this has fixed is incredible.
Processor scaling doesn’t work yet, but I swear it’s a good thing. Not having my speed jump all around has made UI response a thousand times quicker.
My apps using Adobe AIR work perfectly, as far as I can tell (a lot of problems erupted when Adobe released the final version 1.5 for Linux, as you can read about here