Afternoon guys & gals, this is my first post here so be gentle

I've just bought a Panasonic SD10 and when I got it out of the box I heard something move inside of the camcorder - it's not a "some thing has broke off and is loose!" rattle, more of a catch moving up and down - it's the same sound I've heard on some cheaper digital cameras. Is this a normal noise for the SD10? I've got 7 days to return it so I waned to ask other SD10 users here

Thanks,

Verta