I was checking some of my pictures (stored in my computer) from different cameras.... well, some of them store the exif data with real focal length and, in other field, the 35mm equivalent, and some store it with the 35mm equivalent, showing nothing in the 35mm equivalent field. Looks like it is a matter of camera's software. Most of point and shoot camera here store the lens' real focal length AND the 35mm equivalent... I think DA shows the real focal length, that is why there are those insane 5mm and 6mm around.
And I was wrong, it is not DA's fault, it is just the way the camera is storing the data.
But take a look around other pictures from the first page, for example. You will be able to see 35mm equivalent and real lens focal length there.
cheers!!