After upgrading to Movable Type 4 templates, I’m still sorting out some kinks that pop up every now and then.
The most recent kink was spotted by Jimmy Liew who noticed that my Feedburner feed hadn’t been updated in a while. Thanks, Jimmy!
Turns out that the ampersands in some of my category names were to blame. As there was a parsing error, Feedburner refused to process my feed. At least, I think that’s what happened.
This problem didn’t occur with my previous Movable Type templates, as far as I know.
No wonder! I was puzzled about your lack of posts, didn't occur to me that it was a feed problem.