last 24 hours, try to start a Hugefiles download, it asks for the Captcha, get it correct, then goes into a 10 minute WAIT! at which point it does the capcha again, 10 minute WAIT! never does start, this is on every file I try.

since I have no link to test with
my guess is the error message, you also didn't provide, is actually
You have reached the download limit
complain to Hugefiles about that error
or
see how_to_report_problem_with_a_plugin

Bingo. They apparently just started doing a 1gb/24hr for unregistered downloads. Quick acct and all is well again.