Nobody seemed to pick up on this! I had read about modafinil and adrafinil years ago when I was playing with nootropics, but I always try to avoid stimulants because I feel I am never too far away from anxiety and jitters.
Since the mornings have lost their daylight, I have think I have become aware of what can only be winter depression, and a general lack of motivation or willingness to do much during the day. I am probably getting about a third of what I should/could get done in a day, just because I can (I can make excuses, put jobs off etc.).
I ordered some modafinil last week, after seeing your post. I'll see how I do on 50mg at a time.
Dave Pearce's research doesn't seem to highlight any obvious concerns: http://www.modafinil.com/ , and this sounds interesting: http://www.modafinil.com/article/index.html
Cheers