Permanent redirect on root

I'm not entirely sure what's happening here, but recently my domain root just sits in an a infinite loop.


All rewrite rules for the forums are fine - however if you put in my domain root, or click on "home" it happens.


Redirecting... <=== infinite loop

MumsOnline - Where Parents Talk <==== and all other urls work fine

My htaccess hasn't changed since install:

Code:

# Comment the following line (add '#' at the beginning)
# to disable mod_rewrite functions.
# Please note: you still need to disable the hack in
# the vBSEO control panel to stop url rewrites.
RewriteEngine On

# Some servers require the Rewritebase directive to be
# enabled (remove '#' at the beginning to activate)
# Please note: when enabled, you must include the path
# to your root vB folder (i.e. RewriteBase /forums/)
#RewriteBase /

#RewriteCond %{HTTP_HOST} !^www\.yourdomain\.com
#RewriteRule (.*) http://www.yourdomain.com/forums/$1 [L,R=301]

RewriteRule ^((urllist|sitemap_).*\.(xml|txt)(\.gz)?)$ vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]

RewriteCond %{REQUEST_URI} !(admincp/|modcp/|cron|vbseo_sitemap)
RewriteRule ^((archive/)?(.*\.php(/.*)?))$ vbseo.php [L,QSA]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !/(admincp|modcp|clientscript|cpstyles|images)/
RewriteRule ^(.+)$ vbseo.php [L,QSA]

Before posting this, I disabled all plugins (including vbseo) but the loop remains. Any help would be greatly appreciated as I'm stuck now!

Thank you!


EDIT:
Right, there's a lesson here!

When you open a tech support ticket with your hosting provider - tell them not to drop errant index.html files with meta refreshes or at least to remove them once they've fixed the problem.

*sigh*

If you have nothing in root, why not move your forum to root?