500 Error : help.avacschat.com

[arp1445]

Everything was ok. From today my site is not opening - showing error below -

500 Error
An internal server error has occurred. Please try your request again momentarily.

File or directory permissions are set too high: Files should be 0644, directories 0755.
Problem with your .htaccess file.
A syntax error in a CGI script.

site url: http://help.avacschat.com/

Please let me know whats going on?

Thanks and regards,
Arpan Das.

[Jake]

Please read http://status.x10hosting.com/