meleagant,
usually if your rotors are warped.. you'll have the pulsating feeling on the brake pedal when you are braking.... and at high speeds with sudden braking, your steering would jiggle as you apply the brake pressure.

squala, normal ang squeaking?.. nde ata normal yun.. either may problema or madumi lang talaga ang pads.... ewan ko lang. i dont have squeaks when i brake in my car.:D

if the squeak is a high pitch sound na very audible, palit ka ng brake pads.. pero kugn parang small intermittent squeaking, madumi lang yung pads...