(Source: http://forums.dpreview.com/forums/readflat.asp?forum=1036&thread=35006262; Picture taken at 32.5mm, 1/80th of a second, i.e., a speed well above the safe shutter value.)
See what the user writes about his recent experience and then the discussions followed:-
http://forums.dpreview.com/forums/read.asp?forum=1036&message=37777191
http://www.pentaxforums.com/forums/pentax-dslr-discussion/133840-k-x-double-image-blur-issue-solved.html
But do also note that the built-in speaker of his camera was broken (by Pentax) after the repair, anyway! :-o