On certain pdf's, but not all, I get a grey and white checkered background. It should have a white background. Also, the pdf's look normal when I open them in quick look. can't figure it out I emailed one of the pdf's to my buddy (he's also running snow leopard) and he gets a white back ground. So that means the problem is my mac. I attached a file of one of the pdf's and a screenshot of my computer not displaying it right.