Upgrading MySQL

[John_Doh]

Im currently running a rpm install of MySQL 3.22.32 on a RedHat 6.1 server. I want to upgrade to the 3.23.xx series, but im a bit afraid of fscking up MySQL when upgrading. Do i have any reason to be nervous about this? Its really important that the upgrade works the first time i try, since i use MySQL/PHP as a backend on this (web) server.
Should i backup anything else then the databases? Any special rpm parameters i should use when upgrading?
Should i use a rpm from RedHat, or one from MySQL themselves (is there any difference)?

[Sweede]

download the rpms from mysql.com and just isntall them.
there's no need to backup (although you should be backing up anyways) or special flags or anything

just do it

[John_Doh]

Phew.... it worked. My heart almost stopped during the install though. Mysqld crashed when it restarted during the rpm install. But it worked fine when i started it manually.
Thanks Sweede for the moral support ;-)