|ok sounds like the pinter drivers may be playing up.|
before that however look at all the settings
look at the page set up and see that everything looks correct. like the page is A4 excetera. its under the file menu if you cant see it there is a little icon near the bottom of the menu with 2 downwards tick this will expand and show the option
instead of hitting the little icon of the printer to print the file go to file menu then print. a menu will pop up showing the printer name so on and so forth. there will be a little area in the bottom right that says zoom make sure thats says 1 page per sheet and no scaling.
next there will be a printer box on the top that says what the printer is. next to it will be a button that says properies. click it.i cant help you after that as these change from printer to printer. but again makes sure its printing on A4 and not banner. if youve changed anything rember to hit apply or save in the new window that appeared after hitting properties. once youve done all that try and print again. it will bring you back to the print options and just hit the print button on options
thirdly if that fails it could be the printer driver thats nackerd. remove them and install again. thinking about it it does sound reminisent of a old windows problem that if you ran out of paper during a print and resumed it printed out 10 times the size.
see if all that help if not i am compleatly stumped