Warped PowerBooks

A few weeks ago, I posted a query about warped 12-inch aluminum PowerBooks. People continue to post short notes about their own experiences. What I'm wondering now is the continuation of that story: is Apple servicing these units with the results you expect? Do they listen, send you a box, replace or repair it, and return it, or are you getting hassled about normal wear and tear?The stories that I've followed up on, people have fixed the case themselves through mild pressure or stacking books on top (both make me nervous), lived with it (for the time being), or had Apple service it with a minimum of fuss with just one exception -- in which Apple eventually did take care of it.