find /home/*/public_html/ -type d -print0 | xargs -0 chmod 0755 # For directories
find /home/*/public_html/ -type f -not -name "*.pl" -not -name "*.cgi" -not -name "*.sh" -print0 | xargs -0 chmod 0644 # For files
find /home/*/public_html/ -type f -name "*.cgi" -print0 -o -name "*.pl" -print0 -o -name "*.sh" -print0 | xargs -0 chmod 0755 # For CGI/Scripts
How to ..
from : http://djlab.com/2009/06/cpanel-suphp-chmod-all-files-644-and-all-folders-755/