i just spoke with rob grady on this problem after i replaced my brake pads/rotors/ and master cyl. you may have too much fluid in the system... when it heats up it'll expand and cause the brakes to apply.... it heats up gradually so the brakes apply gradually. if the master cyl looks too full (anything above the max line is too full : P ) then use the red cup inside the resevior to spoon out one or two cup-fulls. if that doesn't help... you may try looking at the vaccum assitance push rod. i don't how it would change suddenly but you could try turning it back one rotation. if you need help doing those things... i just did them not even 2 weeks ago... imagine your brakes doing that all of a sudden on the freeway at 70mph.... and having to drive a mile and a half to get to an exit..... yeah.... fun... good luck!! -james lalonde 001697 _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com