I have 2 Linux servers, both Red Hat Enterprise 4.

If I visit a page with links to .otf (Opentype Font) files on a Linux server (prod) and I click on one of them, Firefox renders the font. If I visit the same page on a different Linux server (dev), I get a "Save File" prompt in Firefox.

In Internet Explorer, I get the File Save prompt from either server.

It's probably a package that the prod server has that the dev server doesn't? I'm not sure where to start looking or what to look for.

I do want the Save prompt.

Please advise.