with those reporting squeaky breaks, what are your patterns of breaking? Agressive, moderative, lots of stop and go traffic, wife breaking?? Not that these are the direct cause and effect of break squeal, as it may be mechanical, but its probably the oporator interface that causes the sqeal.
THe resolution usually requires cutting the brake rotors to make them spin accordingly to how the axle interfaces with the hub. (new break pads need not apply.) anyways, i'm buzzed here, so i'm just posting the first thought to come to mind. If others have solutions, please address.
DK