With the new update on 3/5 I cannot print correctly. There is a line of info from my computer at the top and bottom of each page. I'm using quickbooks online and this is printing on my checks. Help!! I tried to find instructions for making changes to the preferences but cannot locate the proper area to do so. I'm new to Firefox so I'm having difficulty finding what I'm looking for. Please help! Pat ''moderator deleted personal information - no need to post a telephone number, we don't provide phone support''