Jfolder::Create: Could not create directory [Joomla]

http://joomla-and-more.com/2009/09/24/jfoldercreate-could-not-create-directory-joomla/
locate the below lines in configuration.php and change as below
public $ log_path = ‘./logs’ and
public $ tmp_path = ‘./tmp’

chmod 777 plugins
chmod 777 tmp dirctory inside public_html
chmod 777 modules
chmod 777 cache