I have recently increased the RAM from 1MB to 4MB, and I have installed Snow Leopardand the Mountain Lion. Before the fresh installations my Canon MX320 printer was working fine, but now I have tried to print a document 15 times but nothin g happens.

I have recently increased the RAM from 1MB to 4 and from Leopard to Snow Leopard and then to Mountain Lion. When I try to print a document nothing happens despite the printer having paper and ink. A ghosted list of each try to print shows and even when I highlight each entry and click on the X or the circular arrow nothing happens, other than a drop down list that states Job 9 is already cancelled - can't cancel. I have checked the Utilities and ziltch! I have also checked the Menu bar to see if there is a 'cancellation' facility from that menu, but again nothing! Help!