Thanks guys, I do have vBSEO installed, however I can't access admincp to turn it off, because the same redirect issue occurs when logging into admicp (the login page comes up but when I submit my login credentials I get the "too many redirect" error).
Is there a way to disable vBSEO by editing a file?
As for Facebook, as far as I am aware it was never enabled.
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I fixed it!
Thanks for the vbSEO tip guys. I searched the forum and found
this post which solved my problem;
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I spoke too soon! The site comes up okay, but clicking on any forum or thread link just reloads the home page.
All I have done is modify the .htaccess file - I am unable to access the vbSEO control panel - it just loads my site home page!
In case it is relevant, my site is at mydomain/forums/ so it's in a sub folder off the public root, called "forums"
Any more ideas?