We are primarily an Ensim shop but recently started rolling out Plesk on some of our new servers. There are some things I like about Plesk, but others still make hair on my back stand when I think about them (no server-wide backup option for all domains, site backups take sites off-line, etc). But, here's one I can't get a straight answer from Plesk support. Brand new install, Plesk 7.5.1/Reloaded on Fedora Core 1. Want to upgrade mySQL 3.23 to 4.x. mySQL 4 has been out for what, over a year now? Well over a year, if my memory serves me right. We've been offering our hosting clients mySQL 4 on Ensim for a very long time, and need to offer the same on Plesk servers. What is the procedure for upgrading mySQL to v4, so that all sites can see and recognize the new version? I'm sure it's a little different than on Ensim servers where you need to run pre and post maintenance scripts that copy the new settings to each site, but... Plesk support won't say one way or another how this upgrade can be applied... if at all. Do I just install standard mySQL RPMs and Plesk takes care of the rest? How much is Plesk tied to the system, OS, packages, etc, and how much can be done independently of the Plesk control panel? Is it anywhere as flexible as say Webmin where you can install things from shell (RPMs, etc) and the web control panel just works with whatever is there, or....??? Thanks!