Well, I'm not a big orb fan (AT ALL) However, on a recent visit to the Museum of Science and Industry http://www.mosi.org.uk/ , in Manchester, UK, I snapped this photo of a Japanese Suicide plane. Note the huge orb in the center of the photograph.
Again, I'm not a big orb fan, and don't necessarily believe it's anything paranormal, but I liked the photo because of the supposed theory about orbs and the fact the plane is a suicide plane. 🙂

Well I dont think the light circle is an orb. Looks like a light reflection/effect, common in some places (the flash can make that too).
See my analysis:
The photo with the light "orbs":

Now the big "orb" separately:

The big "orb" with the circles shapeness indicated:

Now a photo from internet with the same kind of light "orb" (see the circles shapeness indication):

Thank you for taking the time to do this. I agree 100%.