On Linux, OpenOffice.org often sc***s up PDF export. I don't know why, maybe this is one of these weird things that only happen on my computer. Every PC (don't know about Macs) behaves strange when doing certain things. For example: we once had a PC that would crash whenever you'd start a Macromedia Projector executable. My DVD player doesn't play recorded DVDs properly; both on Windows and Linux. It's really weird.