NGinx Issues

Hi since I updated I’m getting these messages:

W3 Total Cache Error: The plugin tried to edit, /etc/nginx/sites-enabled/thebestsites.com, but failed. Files and directories cannot be modified. Please review your file permissions. A common cause is thebestsites.com and /usr/share/nginx/www/thebestsites.com/public/wp-content having different ownership or permissions.
File: /usr/share/nginx/www/thebestsites.com/public/wp-config.php File permissions are 644 File owner: root:root
File: /etc/nginx/sites-enabled/thebestsites.com File permissions are 644 File owner: root:root
Directory: /usr/share/nginx/www/thebestsites.com/public/wp-content File owner: www-data:www-data
Owner of current file: www-data:www-data
The files and directories have different ownership, they should have the same ownership.

Any ideas on how to fix this?

http://wordpress.org/extend/plugins/w3-total-cache/