Bridge is advancing more than one image at a time.

When reviewing images in Bridge, I use the right arrow key to advance to the next image.  I have noticed that Bridge will, on occasion (frequently but not every time), advance two images instead of moving to the next image in numerical order.  In more lay terms, the images should advance 1, 2, 3, 4, 5 but will often advance 1,2, 4, 5, 7, 9 etc.

Does anyone know of a fix for this behavior?

Thanks