I decided to be a cheapass about a year ago and had brakes put on by meineke. After about 2 months, they started squeaking - really annoying. So I took the car to Honda, and they told me that although the pads had plenty of meat on them, places like Meineke use cheap brake pads (blah blah blah -- reel me in to buy "Honda" pads). So Honda replaced them AND resurfaced the rotors.

No more squealing. I'd say not even 2 months later, this noise appeared. I had Honda look at it while they were doing an oil change and they couldn't find anything. I had it there last week for (4) new tires, oil change, front end alignment and to look at the brakes -- couldn't find anything.

I must say though -- the first time I drive the car in the morning.. I can't notice it until about 5 minutes into my ride. The rest of the ride into work, I can hear it.. then my entire ride home from work and if I go anywhere that same night - I hear it. It's almost like once they warm up, this happens. It is also difficult to hear the noise in the rain (either because it is not doing it, or because of the added road noise of driving through puddles, rain hitting the windshield, running down little 14 year olds that ride their bikes down the highway at 10pm..)