Insomnia.
I can't sleep tonight. Again.
I'm doing something for a friend. I usually can't fall asleep at a reasonable time on Sunday nights to save my lives, anyway. My body's circadian rhythms have always been programmed for the 1200-0000 shift, anyway, so every weekend my 0000-0630 rhythm gets shot to hell.
While a long (and CPU intensive) job runs on Windbringer I'm going back through my addressbook, looking up old friends. I'm feeling nostalgic tonight. And sad. A lot of people I still call friends I last saw many years ago before Time scattered us to the four winds. That doesn't mean that we're not friends anymore, but I do miss them greatly.
That's one of the secrets that They don't tell you. Time, like physics, is a bitch.