I've updated to the latest jquery I could find 1.9.1, no change.
I deleted both files from the server the 1.7.1 and 1.9.1 and no change. The wheel keeps on spinning non-stop.
I've checked the error log, nothing is generated so I'm assuming everything works the way it should.
I'm going to leave the DPU on with the latest jquery installed for you to check it out.
Thank you again for looking into it.