Nikon coolpix Lens Error Help...?

I bought a brand new Nikon Coolpix S510 four days ago, and ive hardly used it, ive never dropped it or damaged it or anything, but i turned it on this morning and the camera froze and the lens made a whirring sound. And the "lens Error" sign popped up and the lens was stuck and woulnt go back in. The battery was fully charged, and i looked it up, and a lot of nikon digital cameras have this fault. So i tried to fix it my hitting the cameras on its side a couple of times...and the lens when back in and now the cameras working fine again.... Can someone please tell me whether i should send it back in for repair in case it happens again..? Heeelp