Well, they're back. Not as bad as the last time, but just as annoying. (Random speed drops and disconnects. Bah. >P) Called Comcast and they did a minor quick fix, but if it's still acting up in the morning, I'll get a tech out here to fix it.
Plus side: The burns are complete, save for two disks that are refusing to cooperate. I'll be sending them tomorrow, after I doublecheck the snail-mail addresses.