Userscripts.org

The script works fine with downloads with captchas (including that link of yours) -- especially the latest versions are written after and tested with captchas, but even the initial version had no problem with them, because the first page is the same with or without captcha, and the captcha page doesn't require any tempering. "Captcha and captcha again" did happen to me, too -- until I realized it wasn't the script's fault, but me decoding the captchas wrong, for apparently Hotfile captchas can be difficult to read. BTW, not all downloads have a captcha, and whether a particular one does seems to be fixed.

Correction: Each download can have a captcha or not, it changes from time to time.

Another scenario in which "captcha and captcha again" could've happened is if you were using an earlier version of the script and your hourly download limit had been reached (the latest version is limit-aware). But even in that case you should've seen a message on the first page (right below the button) stating the fact that your download limit had been reached -- unless you've turned off JavaScript, for that message is created by Hotfile's orginal JavaScript, and this script allows you to download even when external JavaScript is blocked (via NoScript, for example).