[Joel]

Lineform places the PDF and it looks nice as well.

Looks like in the case of Preview at least, Apple is hooking in resolution independence so that exported PDF and EPS files render at full scale, which appears to be new in Leopard. As a result, a placed bitmap image will display larger (as does everything else) in Preview, as opposed to how it shows in Graffle which is somewhat smaller so the entire canvas can show onscreen.