Add that it does work fine under FF 3.6.24

Reload web page(s) and bypass the cache.

• Press and hold Shift and left-click the Reload button.
• Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
• Press "Cmd + Shift + R" (MAC)

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

• Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove Cookies" from sites causing problems:

• Tools > Options > Privacy > Cookies: "Show Cookies"

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

• Don't make any changes on the Safe mode start window.
• https://support.mozilla.com/kb/Safe+Mode

Done all that. It only occurs for the Yahoo face page. If I get in, other pages are okay. FF8.01 and Waterfox act the same. FF 3.6.24 is fine. It is a bug tied into FF 8.01

Adblock Plus can cause such issues if CSS files are blocked.
Did you check that?

I do hope that you use different profile folder for each Firefox and 64 bit Waterfox versions?

I stated only the first page "www.Yahoo.com" comes up weird. If I can get beyond it, the rest are fine.

Both FF and Waterfox use the same profile. When I created a new profile I had to reinstall Addins.

Yes the front page of yahoo does show up fine on both now.