Thanks for all the advice, guys.

Computer-related and bike-related alike.
Jim-bob, you make a good point about me getting a different KIND of bike ... hah. Admittedly I am kind of bogged down in the whole single speed thing. I'd really like to get a CX bike, which I could use for CX and mountain biking. I keep hesitating because frankly I don't know **** about those kinds of bikes. I'll definitely consider it.
Brandon, I agree mostly with what you said about fixed gears getting way gaudy when you pour money in them. I am reluctant to buy a "nice" wheelset though because I am very very rough on my wheels. I don't ride like ... abusively ... hard, but every wheel I have ever commuted on went pretty grossly out of true in about 2 weeks (cept my Aerospoke <3).
Blah, so much to think about.
Maybe I can split my money and get a new bike AND a Macbook ... but it wouldn't be a Macbook Pro if I did that!
P.S. Oh yeah, does anyone know of a really really light steel track frame? Sorry to keep asking that question, but I am having trouble finding them! Not sure how many of you browse the other forums at BF, but I recently have been lurking in the Track forum because I am going to start going to the Velodrome regularly. Preferably, I'd like to not suck at the track and I think it might be worth it for me to look into a light light steel frame to use there.