Got the bright idea this evening to finally upgrade the blogs I host to MT4.
Unfortunately, I wasn't counting on wasting two hours waiting for Dreamweaver to back up some MT-related files. So here it is the middle of the night and I'm not done with the upgrade yet.
Will make things work better tomorrow. In the meantime, may be best not to poke at it too much--for example, not sure comments will work yet. (But once they're working, the whole authentication thing, with LJ and OpenID and maybe even Facebook IDs, should work much better. We'll see.)
Apologies also to Vardibidian and his readers for the inconvenience.