i know that i have to disable preview when i view avis, but it is too annoying. when in thumbnail mode, and in the collum mode, if the computer attempts to preview an avi file, finder will restart! is it possible to have an option like "never preview this" or "don't" preview, or just "fix" the preview option? i don't need to preview .avis, but i need for everything especially photos and pictures. it's very very annoying!