Yup Mine is also has this problem.. I've had it almost a month and haven't noticed any issues because of it.. Well It's not really loose but it's definitely not set properly.. It only moves when I physically move it.
I have the exact same problem, im getting a build up of dirt around there. Im not impressed, did you send yours back?
So i finally got my touchpad back from HP Repair today. It took about a week. And you know what?? HP did not even repair or fix the problem. It still the same screen problem. ***? It seems they didnt even fix or atleast added a new adhesive on the screen. Don't bother sending your device just take good care of it. I saw a similar trend here and they had the same repair problem with the screen.