It is lately found that the Sony NEX-5N and the Pana GF3 do share the same bug. See these "clicky" sample videos:-
(URL: http://www.youtube.com/watch?v=ooDgxpAmnT4&feature=player_embedded)
(URL: http://www.youtube.com/watch?v=RnK1hGIkuSw&feature=player_embedded)
via http://sonyalphanex.blogspot.com/2011/09/nex-5n-clicking-noise-in-video-mode.html
So, I'm afraid that Pentax' defenders have been so right this time, i.e., "every camera has issues"! In fact, this clicky sound video issue has not yet been found/reported for the Pentax Q. And once again this must yet be another victory of Pentax as such! ;-)
P.S. The Pentax Q does not (auto-)focus in the video mode, so it completely eliminates the chance for any sound made as a result, also! ;-p