Hey Mark - this is a really common problem, even for you new WJ's that have the Akebono Calipers. Its a combination of uneven pressure and excessive temperature that causes the rotors to wear out. If you search on the forum, you'll see a ton of threads regarding the problem.
Basically - stop buying stock rotors. A lot of people have luck with the Brembo replacements. Some other guys have had luck with the discount brakes at Brakeplanet.com.
If you want to fix it right - Talk to Nick and buy his Stillen Rotos and Metal Matrix pads. You can get him at Kolak@aol.com
They aren't cheap, but supposedly they're the best.
Go over to www.wjjeeps.com
, go into the expanded index, and start looking around at all the information on the brake problem - you're not the first!
(PS...I went the cheap route with Brakeplanet drilled and slotted....they haven't failed yet...but it hasn't been that long!)