Another round of changes is going on here... we're going back to Typepad from Moveable Type, as I just don't feel like running a separate server any more just to maintain this blog. It's going to be a little while before I get the design sorted out again, etc.
Amusingly, this isn't the first time I've made this jump - back in 2004, I switched to Typepad, and in 2008, I switched back to Moveable Type on a hosted server. The tension is always between the flexibility of running your own setup, and the convenience of depending on a service. At this point, I just don't think it's worth maintaining and updating a server to keep those who would exploit security holes at bay, and I'd rather save the server admin work for more interesting efforts like Ruby on Rails projects than this blog.