[eluser]Aken[/eluser]
Probably unrelated, but you spelled "xss_clean" wrong in your rules. Also, put the actual rules before the sanitize functions (IE: "required|trim|xss_clean").
.htaccess shouldn't affect the way your form_validation works, unless your .htaccess file is manipulating post data or URL redirects or something of that nature. Get everything working
without .htaccess first, then go from there.
