The last few rides I heard a clicking noise every time I pedaled. It was not coming from the pedals (I know that noise) but seemed to be coming from the cranks or bottom bracket. If I coasted there was no clicking. I brought the bike to my LBS where I bought it 6 months ago. The mechanic asked me if I swapped out the wheels recently. I said yes, actually, I did, but I "knew" that couldn't be the problem, since the clicking only occurred when I pedaled. If there was a problem with the wheels, I'd hear it even when coasting, right? He took the bike out to the parking lot, rode it for a bit, and returned a minute later, saying he had fixed the problem, and yes, it was the front wheel. The wheel had not been installed properly and the skewer was a bit loose. The clicking occurred when I applied torque, which explains the pedaling vs. coasting issue. I was embarrassed but he was cool about it and said he sees this about once a week. (He didn't charge me, though I did buy an overpriced can of degreaser on the way out.) Anyway, sorry for the long post, but I thought someone could benefit from this story. And before you say it, yes, after 5 years of cycling I should know how to install a wheel!