Hi, we've been sent a pdf from a client which was created in acrobat 7 std. It's perfect when viewed in acrobat reader 7 but when we open it in acrobat 6 professional (our company standard) every page has background lines on it, horizontal and vertical. Many of the horizontal lines cut straight throught text. Looks like some kind of frame that you are not supposed to be able to see. Does anyone know how to get rid of this without upgrading the entire company to version 7?? Have got back to the authors of this pdf but they haven't told us anything else. I am running windows 2003 servers and windows xp desktops. Have opened this pdf on both with same results. When printed the pdf is also perfect, whichever version of acrobat.