Forbidden You don't have permission to access / on this server. Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.

Solution - 1

Delete your .htaccess in the site root (make a backup first), and try to log-in again.

Solution - 2

August 9, I emailed you this: I would suggest deleting WP Super Cache folder via FTP and re-installing the plugin... August 11, I emailed you this: Your .htaccess file (last modified 8/10/2011 at 2:14:00 am) was this:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

Options +FollowSymlinks

RewriteRule ^index\.php$ - [L]

<IfModule mod_security.c>
SecFilterEngine Off
SecFilterScanPOST Off
</IfModule>