 admin login loop
As most are probably aware this is a sessions issue.
Modifing .htaccess did the trick for me.
However, it was not
php_value session.save_path "/path/to/tmp"
that worked for me. My case stemmed from hosting multiple domains. Make sure that the cookie domain matches the joomla domain.
php_value session.cookie_domain "your.joomla.site"
My default value was different from the site, needless-to-say that was the case of MY error (DOH!) | 
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