So I have a weird one here to test your brains!!
Ok, so with PDF files on a single PC, when I go to print any PDF to a directly attached printer it will sometimes change some of the numbers in the document. When you print say 4 or 5 different PDF documents at the same time they all come out different. The PC next to it which is connected to the printer via the network which the other PC is sharing, all PDF files print just fine every time.
Both on XP, same SP, both on Adobe XI Reader and both using same driver.
Virus scan has returned negative.
Any ideas????