hacked?

Firefox has detected that the server is redirecting the request for this address in a way that will never complete.

only 2 things I did was install a plugin ( not from here.) I cant log in to the admin panel. I deleted the plug in from cpanel.
The other was I changed the privacy setting to private.
how can I fix this, Database? and where?

site URL is http://www.patrioticspace.com/index.php I placed a index.html file in there explaining there is a problem.