[blazgus]

Don't need to do anything, in my opinion. Break pad noise is produced by the pads rattling in the bracket, while braking. Starting with e90 there's a new system there to prime or dry the pads. So the car would brake a little from time to time on it's own, thats why 2006-on cars seem to produce way more brake dust than e46s did. That also may be why you heard the cricket noise as the pads get initially ground to the disk. If the cricket noise was produced by hitting the high spots on the disk or disk hitting a bent shield, the frequency would be one hit per rotation and the noise would be constant and would increase with the wheel RPMs. There are some brake anti-squeal products on the market. You might want to give those a shot, if the sound is too annoying. I wouldnt worry, though.