I bought a new 2008 Sahara Unlimited with 45kms on it. By the time it reached 200kms (not 200,000 but 200!), the clutch was consistently popping out. Usually from 1st gear. The noise was unbelievable!
I went to the dealership and advised them of the issue. Needless to say, their suggestion that I didn't know how to drive stick didn't go over too well. In the 20+ years of driving a standard, I had never seen anything like this.
I was getting the feeling they were just going to give me the run-around but then all of a sudden, they said - yup...we'll replace your transmission. Once that was done, the problem went away; however, on occasion, it will pop out but nothing close to as often as it used to.