I've been considering a fulltime move to Linux for a long time, but have yet to take the plunge- I tried a few years ago, but the driver support for my Macbook was less than great.

Now, Lion seems to have slowed down my 2010 Macbook Air- at times it absolutely crawls when I'm positive it never used to. Is there anyone out there running Ubuntu full time who can say how good driver support is? In particular the trackpad- I've never had a perfect trackpad experience outside of OS X, Windows hasn't been able to do it either.