The fastest reaction in auto-updates taking into consideration network security bugs?
I'm wondering what distribution have the fastest reaction in update application packages considering network security nowadays. I mean packages that can be auto update - like apt-get (Debian), yum (Fedora) or emerge (Gentoo)... I think about system, that have no additional users than root (or one additional for the administrator). So I mean about the fastest reaction about fixing the bugs, that can be used to access to server from net.
I was told that Debian has the biggest number of apps accessed by apt-get, but the reaction about security is not so quick?
What do you think? What is your opinion? What distro would you chose for now?