Uneven brake pad wear, now what?

[curlykicker]

My front right outside pad is completely worn. The inside pad still has lots of life to it. After reading this
thread, I think that I might have to lube the sliding caliper. How do I it and what piece do I lube?

I did notice on the outside pad that there was a real rough spot, the size of a penny, on the surface that touches the rotor. Would this be the cause of the premature wear?