people keep talking about the 'reset your modem' trick, havent tried it out yet.
This works for me. I just disconnect from the internet and connect again, and RS resets and allows me to download right away.
That's probably because your IP address gets changed when it gets reset.
You used to be able to be sneaky and load up the download link with a proxy, but actually download the file with another browser using your real IP address. Dunno if it still works or not though.