Firefox has trouble paginating some content that uses certain style rules. If the site offers a printable format, that's always a better bet than the standard screen layout.

For specific comments, is this a public page that you can link to, or something that requires a login to view?

One workaround that sometimes helps is to select the entire content (Ctrl+a) then call up the print dialog (Ctrl+p) and change the print range to Selection. There's no way to preview that in Firefox, but if you have a PDF printer driver, you can examine the results of that without wasting paper.

I tried jscher2000's recommendations, but they didn't work. Not only that but, I also selected the website's "print page" option, and I could only get the first page, but not the 2nd or 3rd pages (the last 2 pages were blank, save for the header and footer info).

Hi SCBrown, can you give a link to the unprintable page?

Some sites require a hack to the page styles, for example, Walmart product pages. See: How can I print out this product's warranty information on walmart.com?