I just upgraded WordPress to the latest version, 2.3. As usual, the upgrade went smoothly. It’s almost a rule, you take a backup of everything, and then the upgrade goes fine.
You don’t take the backup, and everything goes tits-up.
One thing that I really like is that it seems more responsive, quicker somehow. Plus the plugins tell you themselves (well, most of them do) when a new version is available. Cool !
And of course, finally, FINALLY, we have built-in tagging. Woot!