I pulled two 25-hour days last week (and when I get slightly more on top of WWDC, I will post about it), and for most of last week I thought I was just recovering from those. But I don't think that's it anymore. I have a slight swelling in my neck (but no sore throat or fever), and for the past few days (after the second 25-hour day), I've been sleeping 7-8 hours at a time -- unusual for me, since I usually have trouble sleeping that long at a stretch -- but I'm doing it about every 12 hours. Last night I could not keep my eyes open after about 8:30 PM, and I went to lie down, and I slept until 4:00 AM, waking only once or twice and feeling very tired until 4.

Now I've been up for about 13 hours, so we'll see if I can make it through the evening if I try hard enough.