also found another bug.
i have 2 products added for testing in the moment
first have 3 jpg images: shirt, shirt_01 and shirt_03
to the second product im adding a new image called: shirt66.jpg.
i have it displayed ok for the second image, but when i go to check the first one i see that this new shirt66 image is also displayed in there! and it shouldnt be
i've checked also what happens when i add a new image shirt77.jpg to the first product, but in that case it is ok, new image is displayed only in first product not in the second.