The media uploader keeps giving me an IO Error message when trying to upload two reasonably-sized pdfs (13 MB and 16 MB). I've noticed that after it times out and I try to upload something else, the "max upload size limit" keeps changing between 32MB and 8MB. It shouldn't vary each time I try to upload a file/image--that is just odd. I just updated to the newest version of WordPress software. Is it a bug or is it me?