Did you get a warning during installation? It sounds like you’re using Hostgator. You’ll have to ask them to whitelist your domain from the mod_security rules, or in your tracking code (at the risk of not tracking users with some older browsers), use .setRequestMethod(‘POST’).
I deleted the other language files, and left en.php. I got a warning, but ignored it, since I felt the other language files are not required.
Yes, I am using hostgator and I have used setRequestMethod… before trackPageView…
I am using the code on the same domain, so I don’t think mod_security is a problem.