This happens on WS_FTP, FileZilla and SmartFTP, so it can't be the software. I talked to my ISP, and there's nothing stopping me on that end. And right now I've been uploading some files for the past 90 minutes, and they go in sporadic groups. That is, 20 or so files will go like lightning, then stops for a minute or two, then another group transfers super fast. Over and over.
What in the name of the binary gods is going on??