Just a quick update on ICS for the touchpad. The Cyanogen team has started releasing nightly updates again. I recently installed the 3/29/2012 update. No problems. Runs smooth. Using the 4.0.4 build of ICS.
CM9 Official Nightlies
The only bugs I see in CM9 are the browsers (both stock and Chrome Beta) crashing/closing occasionally. Not sure what causes it but I am guessing its some sort of unsupported plugin. These crashes have happened on CM9 alpha 2, the 3/17 and 3/29 nightlies so its not something new I am seeing.