*TL;DR*: YMMV, but upgrading worked/is working great for me I suspect like many Ubuntu 10.04 LTS Server admins out there, I've avoided upgrading any 10.04 servers I look after to 12.04 because it's always good to give a new LTS some time to bed in. Well, today I let my VPS 10.04 upgrade itself to 12.04, and it all went swimmingly (from what I can tell). My VPS doesn't do much (Lighttpd, PHP5, Percona MySQL, PureFTPD and Wordpress, and that's pretty-much it...) so the upgrade didn't take too long, and I left all my configuration files as I have them set up (my SSH is Monkeysphered, as an example), but all the stuff I had before the upgrade I still have after, and it all works still. I'm not about to advocate widespread upgrading just yet (I have three servers at work running 10.04 LTS, and I'd only be prepared to upgrade one of them right now...), but it's looking like 12.04 is almost ready for full-time server use. Kind regards Murray Crane