Oui, j'ai besoin d'une solution
The issue explained in this prior thread (https://www-secure.symantec.com/connect/forums/mswu-804-reinstall-next-day) is now happening with MS13-081
If you look at installlog.csv (C:\Program Files\Altiris\Altiris Agent\Agents\PatchMgmtAgent) it shows MS13-081 correctly installing with code needs reboot. Even on machine rebooted, however, patch remediation isn't showing any machines as having it installed. Eventually MS13-081 tries to install again and errors in the installlog as it's already installed.
I don't have time to escalate this one with Symantec (about to go out of town), hoping the rules issue gets resolved on it's own.
I'll post back if I see it fixed.