Further to the previous reports by some K-5 users, I've seen yet another same report today by another K-5 guy:-
http://forums.dpreview.com/forums/readflat.asp?forum=1036&thread=40277738
Well, I just wonder why that lens release button of the K-5 should be more easily broken than the other Pentax DSLRs?! :-o >:-| If not, why we have not seen similar reports for the K-r, say, which is sold far more than the K-5, certainly.
Nevertheless, once again, this strange K-5 quality and reliability issue is verified.