I'm staying at coop near campus this week (officially, because the dorms aren't open yet, but my roommate got early return to help with rush, so really because I wanted to hang out with these folks). Some friends are letting me sleep on their floor. I will swear up and down that my laptop was muted when I went to sleep - but it made that big-ass Macintosh BONG when I booted it this morning while they were all still snoozing. Dammit. I feel like such a chowderhead.

For future reference, I found StartupSoundPrefPane; I haven't used it yet, but I'm installing it now.