I've bought Sandisk 16gb sdhc from Ebay. Package and card look like they are original. When I access to card with my N900 and format it with the default file manager it says that the cards capacity is only 965,4mb!

I tried to access to card with my very old sd reader with adapter using winxp. I formated the card with windows explorer and it also says that the capacity is only 965,4mb. So is there any solution or is my new microsd card fake. Or what is going on?