The only snag was that for people using usermeta for WP 1.5, if they upgrade without reading the upgrade guide, it will completely break their system. Moral of the story – always take backups of your database before upgrading.
Not that I did that. I upgraded without taking a backup. Stupid me. But thankfully nobody users my web site 😉
Oh yeah, in other news, I’ve modified the CSS of this site to work with the latest Firefox. I don’t think the old CSS was wrong, but Firefox hated it.