Originally Posted by CHiLL
...Any ideas on how to get it back to 4x A4 sheets?
I just had a play on Publisher 2003. In the dialog box "Poster and Banner Print Options" (a submenu of Page Setup), setting the overlap to a value greater than zero can cause the effect you describe.
Also, I don't have A2 as an option, and had to look up and set the custom page size.