I find that when using Safari 4 on a multi-display Mac set-up, the colors will become corrupted when scrolling the content view of the window. Banding is introduced and the foreground colours tend towards black:
This only seems to happen after login, and is fixed by moving the Safari window from one display to another and then back. Does anyone know of a more permanent solution? I'm on version 4.0.2 on Leopard.