Battery life in general sucks right now for CM9. Imo, we're still in a beta phase.
Other news: because FXP didn't release a new version this weekend, I built one & it should be uploaded.
Sent from my phone, please excuse any Swypos.
Very nice work!
Would you be interested in putting a wifi unloader script into your build?
I used your release along with the doomlord kernel for now. By doing that it seemed to break the wifi and I get great standby life. Needed battery life more than wifi at the moment.