I know some people had problems updating because their 2.3beta became a 2.2, downgrading and losing some settings.
(remember that you are using a beta and you should backup your settings)
For this reason i disabled the automatic update of the new 2.2b for a day or two, while the 2.3 users will upgrade to last build.
This should solve the problem for most users (the ones who keep up to date with builds).