I woke up this morning to discover that the migration I did last night - moving the blogs to a new server - had a few lingering issues. A bunch of generated urls were wrong, the RSS feeds were borked.. in general, a mess :)
I've been plugging away at that this morning, and most of the issues are resolved. Comments are still broken, as is the "printer friendly" view. I'm looking at those now
Update: Turns out that comments were broken due to a way too specific set of Apache rewrite rules. It should be good now.
Update2: The feeds have been fixed - the links in them were all messed up this morning.