Originally Posted by peety3
Well it depends. The list could be "biased" - what I really mean by that is, if this lens is rented say 100 times a month, while the other lenses only say 40 times per month, there is obviously more chance to find a problem in this lens (the 17-55). Also, since so many people are using this lens, the chances are even higher - you don't know what the lens is going through while people are using it.
I guess Roger Cicala could shade some more light on this issue and help us understand it a bit better.