Possibly in the wrong forum but as a Clyde, I figured it may help to address a Clyde audience.
Just over a week ago, I bought an '09 Giant Cypress DX Hybrid. 21 speed, suspension at seatpost and front fork, and disc brakes.
I'm 6'3" and 280lbs. We ride 4-6mi every night in subdivisions and bike paths near us, working up 1mi per week with a goal of 50mi/wk over the course of the next month or so.
The Cypress has developed a phantom clicking/rubbing sound in the front and (I think) rear wheels. Initially it wasn't very loud but tonight was worse than normal. (I say 'I think' because soemtimes I think it's the front, sometimes I think it's the rear, and sometimes I think it's BOTH).
It changes speed as I do, one click per wheel revolution. The click doesn't get any quieter when I decelerate hard (don't think it's the brakes rubbing). Seems to stay constant as I turn in either direction. Tonight it started quiet but by mid ride it was pretty loud. Most noticable from 6-10mph, quieter as I go faster.
I am due for a check at the LBS in another 2 weeks but can take it in Wed/Thurs if I'm still scratching my head. I've checked for obviously loose screws but hesitate to wrench too much on it. I'm a mechanical engineer by education but scratching the paint on 'the baby' when it's less than 2wks old makes me twitch.