I am having trouble with graphics in PDFs. Often, they are corrupted both when I use quick view in email or when I use GoodReader. These are PDFs which I have received by email and which appear fine on my PC. Is there something about email on the iPad or the settings I am using which is causing the problem? Or is it something about the PDFs themselves which is causing it? Would I get around the problem if I used something other than email to get the PDFs onto my iPad? It is a real shame because the graphics look great when they are ok.