Problems with IE9

[eluser]Unknown[/eluser]
Hello

I'm having some problems with IE9 and sessions. I've already configured 'allow cookies' on tools->privacy->advanced, and set $config['sess_match_useragent'] = FALSE on config.php.

I'm rendering page content according to session data. All is OK until I make an AJAX call to some controller. After this AJAX call, when the user clicks on an anchor/link that uses this rendering, the value from sessions is resetted, as if it goes to index() again.

Any help would be greatly appreciated.
Thank you