I'm having the same issue. It's been about 425 days since I last logged into CIT, and I requested a new password. It arrived, but is not recognized.
I deleted my temp files, and all cohtitan cookies. I'm running Firefox on Vista.
I pulled up the site in Chrome and was able to change the password. Going back to firefox, I was unable to use the new password for a key, but I did need it to log into the forums..