I just upgraded first my desktop and then my primary domain / LDAP server to Ubuntu 10.04 Lucid Lynx.

Everything went very smooth on the desktop, but I did it as a full install onto a new 64 GB SSD hard drive, with a HDD for the /home directory.

The server however broke phpldapadmin which was installed, and caused all my custom puppet scripts to fail due to bad design based on poor documentation. As usual, they moved my cheese. That's why I wait for the LTS upgrades for servers, which is what it's designed for anyway.

On the desktop though I must say - the reviews don't do it justice. I was reading the news on the net about what changed and thinking "well that's not much." Boy was I wrong! There's a lot of little attention to detail and just plain... smoothness to it that wasn't there before. It's truly a polished release. The only issue I had was related to using Thunderbird. They package Thunderbird, but they don't allow installation of Lightning from a package because there's no 64 bit version in the package system. I had to find the beta 64 bit version of Lightning and manually install it.

And as for all the hubub over switching to Yahoo as the default search engine - it apparently didn't happen. But the darn window buttons were annoying before I switched them back to what I'm used to.