Hello,
As mentioned in this email, it is planned to reopen Cauldron development on Sunday (tomorrow) :
http://www.mageia.org/pipermail/mageia- ... 15827.html
If you installed Beta or RC releases of Mageia 2, and want to stay with the stable release, make sure you don't have Cauldron media configured. In that case you should remove the Cauldron medias and replace them with the Mageia 2 medias before installing any updated package.