I have a Marin Palisades Trail 2006 with the Hayes Hydraulic brakes.
I have noticed recently that when I am tanking along in the higher gears, I am getting a whine from the front disc - it stops for a moment when I apply very very light pressure to the lever - not even enough to cause noticable drag. A couple of moments after releasing the lever, the noise starts up again.
Any pointers as to why this may be happening? Do I have an alignment problem?