What about paper size?

http://kb.mozillazine.org/Problems_printing_web_pages#Prints_to_a_small_portion_of_the_page

Paper size is A4 . I have now discovered that the problem seems to occur when the web page consists of various frames. These are rendered in series across the page rather than being correctly positioned in the vertical direction. A bit like a text documect with the carriage returns missing. A simple single frame web page seems to print OK.

Problem solved ... It WAS paper size ... This had somehow got set to A2 instead of A4 ... Don't know how that happened ... Thanks very much for your help ....

You're welcome.

My problem is it RESETS THE DEFAULT TO A2 every time I try printing anything. The Windows printer default is letter. But every time I launch the print preview - even for a different tab, it defaults to 2.75x4.57.

How can I set the DEFAULT paper size to letter for firefox?

If I forget even once I get strange results and waste a lot of paper.

The default is in about:config and there were many printers with lots of random settings and no way to get rid of old printers, etc. so I just used what was recommended elswhere - in my profile directory, I exited firefox, edited prefs.js and removed everything starting with "printer.", then restarted, selected (the default) printer and made sure the options were right - and weren't being overridden to a tiny default paper size or other problem, and then did a preview and it was normal.

I recently changed how I connect to my printer so there were several variants (X, X_usb, X_ether, X_wifioldAP, X_wifinewAP ...), and updated the drivers, etc. so it is possible something really confused the prefs.js entries for the printer as most recently configured. some of them had the strange small value (and used metric), others were normal.

In any case, removing all the printers reset the options and everything is working normally now.