So alas, one of the processor fans in the MetaFilter server decided to up and die, which coincided perfectly with a planned vacation to New York. Upon coming back, no replacement fan was to be found on my doorstep (due to stupid delayed shipping by the company from whom the replacement was ordered), so a trip to CompUSA later, we're back in business. Sorry 'bout that.
Sorry about the brief outage today; the networking equipment at this end of the T1 had a seizure, apparently, and needed to be restarted in order to get things back in order. Makes no sense to me (or to the networking gurus at my ISP), but there you have it.