I am facing this problem with http://pi.strangled.net which is currently hosted on freepgs.com
QuoteInternal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, firstname.lastname@example.org and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
I can't access any files in my web directory via http in any way.
Please take a look into this. Thanks!
The first thing you might want to try is disabling any .htaccess files you have in that directory. Usually that is what this involves. So a few pointers:
-make sure you don't have any typos
-make sure that you don't have any "Options" directives (they're not allowed)
To disable a .htaccess file, simply rename it to something else via ftp.
Thanks! It has been resolved. Apparently my FileZilla didn't show hidden files on remote server, that's why I can't see .htaccess that was still lurking.