Someone has done an experiment recently and found out the possible root cause of the K-5 mirror flopping issue:-http://forums.dpreview.com/forums/readflat.asp?forum=1036&thread=38904425It is concluded that it is a design issue, i.e., problem may happen for freshly charged batteries with higher voltage. Do note that original batteries are used in the test.Next, yet another K-5 user has reported
