32gb sd card problem

Hey everybody, I purchased a new 32gb sandisk class 2 sd card, and when i try to put music files on it, it'll show them all transferred over, but when i pull the card out of the sd card slot of my inspiron N7010 and re-insert it back in the slot only the first 11gb of files are still on it, and the rest only show the folder names, but the contents are empty, even though the windows explorer still shows the same space used before i pulled the card out of the slot... any suggestions? I formatted the card before I used it, and I've tried copying the files over to the card, and then cut and paste the files over, but it always does the same thing, after i pull the card out of the slot and re-insert it, only the first 11gb of files are intact and all the files after 11gb are showing as empty folders even though windows explorer shows the same disk space used before i pulled the card out and re-inserted it...actually I should've said only the first few files are still on the card after I pull it out and re-insert it, but as I said before the folder names are still there, it's just that the folders are empty, and windows explorer still shows all the space still used up before I pull the card out and re-insert it, even though when I click on any of the folders after the first 7 or so it says the folder is empty...