Error i encountered while accessing mysite.com/admin admin area is
Mage registry key "_singleton/info/feed" already exists
I couldn't found anything on web relating this except a discussion in a non english forum and i am not being able to access backend.
I'm answering this regarding @pankaj Comment
As my backend is already blocked with error page, option i have to clear cache and session is :
To clear the cache, simply delete everything from the /var/cache directory and then reload your website in your browser.
To clear all sessions, you can also delete everything from the /var/session folder within your Magento installation directory.
