Sh$# Steve Jobs Said...

An intranet site needs to impute its values from the very first impression it makes.
Starting life with a world class feel and identity is essential.

NTLM Authentication in FireFox

AKA, the FireFox Fix.
This is required if you have a Windows Authenticated website and need to access it via FireFox and not have to re-authenticate.

Type about:config in the FF address bar

Click the cute "I'll be careful" button

In the filter search type "ntlm" And select "network.automatic-ntlm-auth.trusted-uris"

Now enter the domain.com address If your site's sharepoint address is scooby.sharepoint.com, just enter sharepoint.com in here

Retry, you should not be able to access the resource, but close and reopen FF first.