I honestly have been really easy on it since I had T-case issues in '09. Only 1 or 2 trail rides since then and they were modest rides at best. I had some outer shaft and u joint issues back in spring time. Im starting to think that I didn't do the best job replacing the outer seal. Jeep is at a friends shop and they are telling me that a rebuild is probably not work, that I need a whole new setup. The timing couldn't be any better. I drove from Atlanta to Knoxville (3hr) and back last thursday without a bump, a tick, or a whine. Saturday afternoon, it seized up while I was in a turnlane at a busy intersection. I managed to get out of the road and into a parking lot. I was all alone while trouble shooting. Once i figured out it was a front end problem, I had it towed to the shop. Front axle was seized up and I watched in agony as the guy wenched it up onto the flatbed, tires grinding and skidding the whole way. Seriously though, this could not have happened at a worse time.