uneven brake wear between right and left rear brakes

[link23]

I bought an 07 rabbit used about 7 months ago. It had sat for a little while and only need some minor work to get it back into shape. I changed my front and rear rotors and pads about 5 months ago. I started to get a squealing noise when I lightly braked from the rear left brake so I checked it out yesterday.
The rear left brake pad is almost completely gone after only about 10,000 miles, while the right rear and both fronts have 3 times as much meat left on them. I was wondering if anyone has had this problem or has any idea of the cause. I've adjusted the e-brake down, but even if it was overly tight, it still wouldn't explain the extreme wear on one side and not the other. The only thing I can think of is a bad caliper, and if so, do i have to replace it or can it be rebuilt? Thanks for any help in advance.

[Jean-Luc Michaud]

I had a problems with my rear brakes, the rotors weren't straight so it ate my rear pads. You changed you're back rotors with new parts? We never know, it could be a bad rotor that was not straight and it used the pads faster. I would remove the caliper and put the piston in, try the brakes and see how the piston goes. If the piston looks okay and pushes straight, I would look at my rotor to see if its correct.

Putting my 2 cents. I'm not a mechanic.