Problems detecting my site with iphone

I have recently had some issues with TeraWurfl causing 98% usage of the entire webserver last week. It eneded in a deactivation of TeraWurfl plug-in and then a uninstall. After that no more problems.
Now as the new version was released I reinstaled also TeraWurfl as there was problems for iPhones detecting the mobile site. I have teraWurfl up and going again as well but stil problems detecting the site with iPhones.
Smartphones work just fine.

URL: www.nowire.se

How can I solve this?

Most likely the problem is that MJ saves terawurfl data to user's session, so after disabling (or uninstalling) of TeraWURFL it could be necessary to empty jos_sessions table.

Oh how do I empty jos_sessions table?
Suppose it's from the phpMyAdmin....

Yes, from phpMyAdmin.