For those of you who care about this sort of thing, I upgraded the backend of the site to Movable Type 3 and installed MT-Blacklist to help me deal with the comment spam problem that I had been having. I can recommend MT-Blacklist to anyone with a MT installation without reservation - it's just that good at dealing with comment spam. I'll hopefully be migrating over to an SQL database in the back end as well, but that'll take a little longer for me to get up to speed with. Anyway, it looks like comments are back for good.