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Don't have two <div>s with the same ID. Don't have this anywhere on your entire site, because JQM loads multiple "pages" into the same document, and then you might have a duplicate ID.
For me an ID was something like <div id="the_id" ... so I don't understand when you speak about duplicate IDs.
That's not a good solution. In fact, it's not really a solution at all.$.mobile.ajaxEnabled=false;
I put this little bit of code on my page and everything works fine now !