i have a lexar 1 gb Micro sd. its not very old, and ive formatted it a few times. here the problem. when i put a file on the card, it says i have so much space left. but when i take the file off the card, the remaining space is the same. also, when i add another file after all this, the remaining space goes down even more. so eventually i have like 39mb left with an empty card. ive never had this happen. so odd.