Have a 2004 Liberty (LE 4x4, auto) bought in November 2003. Just passed 246,000 miles on original equipment. Here is rundown of major maintenance on my Liberty over the years (other than recalls and routine maintenance):
194,758 - Rebuild rear differential and replace valve cover gaskets
225,917 - Replace A/C compressor
233,486 - Replace rack-n-pinion and radiator (leak)
Other maintenance over the years I would deem 'routine' such as oil changes, brakes, tires, tune-ups, etc ... have had great luck with the Liberty but you have to take care of it.
On another note, just fooling around with numbers the other day .... at today's gas prices ($3.35 p/gal) and a 20.7 MPG I have spent almost $40,000 worth of gas ....