Some sites (including http://www.intensedebate.com/openIDSignup) seem to mangle
our OpenID, truncating the last letter of the path.

From a user:

Steps to reproduce:

  1. (Optional: I can log in to https://creativecommons.net/ before)
  2. Go on any website requiring OpenID, for instance
http://www.intensedebate.com/openIDSignup
  3. Enter the address https://creativecommons.net/Diti
  4. Try to log in using "Diti" as login, and an alphanumeric,
14-characters-long, ASCII password
  5. If the password is wrong, "Incorrect password." is displayed. If it is
good, nothing is displayed, and "dit" (it apparently comes from "Diti") is
appears in the login text field. No other error message is displayed.