Totally glazed over my rotors! Now what?

[JaeTea]

OK I've posted this problem about my ebrake never working right, it won't lock the rears, it takes 10+ seconds to fully lock, etc, etc.

I took it over a friends house to have the ebrake cables swapped out, he takes off the wheel, and says "Ummm I don't think your ebrake is the problem, your rear rotors are totally glazed over".

I'm running cross-drilled and slotted Brembo rotors front and rear, Project Mu Type NS front pads and Mu D1 Spec rear pads.

Now I'm not sure what to do at this point. Do I need all new rotors and pads? Or just rotors?

Why the hell would my rear rotors be completely glazed over if I'm using street brake pads? I thought that only happened with crappy pads.

And whats the best way to avoid this happening again? I have no idea how the hell my rotors got like this to begin with.