You can get Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html

When you install it it will use your existing bookmarks and other user data.

Just did what you suggested. Thank you so much. All my bookmarks are intact.

This isn't helpful. I go to the page to download an English version and on the page there is no link to download anything at all. Just a text only line saying "Download Firefox (English)" with no link.

This really isn't fair. I feel like I've been tricked. If it doesn't work on OSX 10.4.1, it shouldn't be downloadable, or at least the system requirements should pop up. My old version just asked if I wanted to upgrade, so I figured it would work.

Thanks a lot, Mozilla.

The link that I posted above has downloads for all language versions.