403 Forbidden error

[gaurav]

Hi,
    I am getting
403 Forbidden
Additionally, a 403 Forbidden error was encountered while trying to use 
an ErrorDocument to handle the request.
 
error while  try to visit my newly uploaded site fc3
I have
chmod -R 775 /var/www/html/wiki/
 chown -R apache:apache /var/www/html/wiki/

but still getting this error ... is related to SE stuff or some other 
prob ??

rgds,
gaurav