bubbles

On my 2010 hyperlite Marek I noticed that under my bindings theres this big bubble. its under both bindings but ones slightly larger than the other. I thought of if water was trapped underneath and it was humid these could maybe form. But I've been riding hyperlite since my first board, a 128 motive, and this has never happened to me before. Also I ride in wisconsin so it doesn't even get that humid here, and our season is pretty short.

I feel like my bindings come loose after a set or two now so easily and I always have to screw them tighter. I e-mailed hyperlite awhile ago but still haven't heard back from them.

so has this happened to anyone before? and if it has did you just screw your binding screws tighter and forget about it?