Hi all. I have owned a Canon 28-135 lens since November 2007. In both June and November this year, I sent the lens to Canon (Irvine) for the same problem (no focus lock at 28mm setting). Now, the lens started exhibiting the exact same problem again. I contacted the Canon Care Center and asked if it was possible to get a replacement lens, since mine broke down 3 times with the same problem. They said they could not do that, and recommended I contact either the Canon Factory Service Center (by phone) or the Canon Customer Relations Department (by snail mail). They also offered me a pre-paid shipping label to send my lens again for repair. My question is: has anyone been in a situation like this? Any recommendations for a course of action? I would really like Canon to replace my lens (I love it), but how do I achieve that? Thanks in advance.