Just over a month ago, I bought a used PL 25mm 1.4 lens. I didn't get much time to experiment with it until last week. Then, for no apparent reason, the lens's aperture stopped functioning. It would always shoot wide open. I tried other lenses and they worked fine. I didn't drop the lens or mishandle it in any way. Because these lenses retain their value very well, it wasn't cheap. But, now with repair costs, I'll be paying more than a new lens. And, yes, I discovered that the warranty on a used lens is 30 days. Kinda makes you think twice about buying used. Anyways, I was just wondering if anyone else had a similar problem. I hadn't read about any mechanical/electrical problems with the Pan/Leica lenses.