I meant just the one in your public_html folder. Try this, if your not using FrontPage Extensions, go to your cpanel and look for the link called FrontPage Extensions and uninstall them. That will remove all of this folders:
/public_html/_vti_txt/.htaccess
/public_html/_vti_pvt/.htaccess
/public_html/_vti_log/.htaccess
/public_html/_vti_cnf/.htaccess
/public_html/_vti_bin/.htaccess
/public_html/_vti_bin/_vti_aut/.htaccess
/public_html/_vti_bin/_vti_adm/.htaccess
/public_html/_private/.htaccess
Then give it a try.
Also check your Error log at your cpanel for errors for me.