1 px move fault during alpha fade

can anyone remember how to get round the annoying moving image whilst fading (the image moves one pixel when fading in/out).

I know it was a fault in earlier versions of flash, I thought it had been resolved.

I need a really nice, clear, crisp fade in and out of an image which has been imported.

I know this is only an issue with and imported jpg/gif`s.

I cant remember how I got round it before.