FotoTomas:
At first I considered a mountain bike but my LBS did not have one that would fit both my size and my budget, thus I went with the Trek 7100, and have no regrets. Today was my first full commute to work on it and it was a great commute.
PainTrain:
I don't know what to say man, maybe you are much tougher on your bike than I am. I have yet to have a single problem out of mine and I think we have the same year/model of bike, a 2004 Trek 7100. Ever since reading your posts about it I've been on the lookout for issues and have yet to encounter one... see, now you've gotten me all paranoid!
Though I guess a little paranoia is a good thing.
I feel for you, I know if I had all the problems you've been having with the wheels I'd get pissed, scrap the whole thing, and either buy a new bike or quit all-together.