Title says it all. Basically, I reformatted my new flash drive to MS-DOS (which I think/suspect it was already) and files copied onto the flash drive become much larger. For example, a 275 megabyte folder full of images turned into a 425 megabyte folder-even when dragged off the flash drive. What could cause this? I do suspect that it's a labeling error, as the file doesn't act like it's gained size.