Must be AOl, it let me subscribe with IE6. It would give me the error message after clicking submit. It would take a minute, but it would eventually give me the error message:
Web Site Not Responding
The web site you have requested may be experiencing technical difficulties due to a busy or broken server.
Please try again by clicking the Reload icon on your navigation bar or, if that doesn't work, you may want to return to the site at a later time.
504 Connection Timed Out
It is an AOL error message, rather than a IE message, I think aol's browser, just won't let you wait as long as it takes to subscribe.