Curing Firefox
Whacking this in the htaccess file cures the problem with the incomplete URL, and now my site is working in all browsers.
# mod_rewrite in use
Options +FollowSymlinks
RewriteEngine On
RewriteCond %{http_host} ^domain.com [NC]
RewriteRule ^(.*)$ http://www.domain.com/$1 [R=301,L]
Yes, I know you can find this all over the net already, but until now I didn't need to use it and perhaps the same will be true for someone else.
Over and out ;)