Duplicate movie clip causing flash memory problems?

anybody encountered this?

i’ve got a movie clip which contains 3 pngs which duplicate and change scale with AS.

it works great. the only problem is that something about this movie clip causes my .swft 3d animation and other graphics (flash vector shapes, text, etc.) to look super-jaggedy puke-like.

as soon as i delete the MC all of the other flash shapes/graphics look great again.

i tried using unload movie to unload my movie clip but that does nothing…

any way to get that clip out of my flash movie after it plays so that it no longer is a memory issue?