I just upgraded to Movable Type 4. More specifically, the ever awesome Pavel from Living Dot did the upgrade for me. So, two things
1) if things get wonky, be patient while I work out the new features and try to get things going.
2) if you are looking for a web host I more than recommend Living Dot as a host. From the beginning they’ve been pleasant, helpful, fun and responsive. Their tech support is in the US and they speak english (not that I’m disparaging the other languages of the world, it’s just that when your tech support dude says “i doubt at the installation part of you” to you…). Their prices are reasonable, I’ve never had a minute of down time (that I know of) and again, the tech support is out of this world.
Wish me luck my peeps!