Well, my thumbdrive seem to be giving me some problem..first, copy files to the thumbdrive is very slow and then data seems to get corrupted (for files 100mb and above).does this actually mean that the thumbdrive is faulty? The brand is Emtec though...
You only need the receipt if you want to RMA it through the retailer. Otherwise, you can directly RMA the USB drive via the distributor... or better still, the manufacturer. I did so with my two SanDisk memory cards. So much easier to deal directly with the manufacturer.