I've got an interesting one here, and I don't believe anyone else has reported it. First off, I started this game in 33a, and when I upgraded to 33b, I had the problem where I no longer have contact with the outside world. No traders, no immigrants, etc. I don't know if that's relevant, but I thought I'd mention it. The dwarves are also not having any children.
My actual problem is this: my FPS was averaging around 65 for the last few game years. I turned off artifacts and invasions as I am building an enormous structure with a lot of stone blocks. I expected my FPS to drop slowly as I had more and more items to deal with, but it was going along fine. All of a sudden, about a game year ago, my FPS tanked. It went down to 10-25 FPS all at once. I kept waiting for it to fix itself, but it didn't. I haven't done anything different in the game, nothing has changed.
After experimenting a little bit, I have found a way to increase it: hitting buttons on the keyboard. For some reason the FPS increases to about 45 whenever I am hitting a key. I tap the arrow keys back and forth while I watch my dwarves work and I get that boost, but as soon as I stop, it drops right back down to about 15.
I can upload a save file if need be, and I've been backing up seasonally, so I can also give one from before it happened.
Also, now that I think of it, there is a dwarf in my fortress who does nothing. he used to work just fine, but all of a sudden one day he just... stopped. He has applicable jobs enabled and there is plenty of work to do, but he just sits there. I thought maybe he was depressed, but his mood is actually quite happy. I thought maybe he was stuck, but he moves around just fine to eat, drink, and go on break. But the rest of the time he just... sits there. No job. I even tried drafting him into the military and back, but he went right back to sitting there, unemployed.
Have I discovered the first dwarven bum?
[ November 30, 2007: Message edited by: Sappho ]