when I try to enter into a chat room here, I am told by the browser to log in first (although it seems I'm logged in already, as my name is displayed on the stackexchange page, along with my user number : 15381).
When I try to log in via Stackexchange.com, I am told my password is wrong, and in my e-mail I receive a password-reset link, which does not work (the link is https://openid.stackexchange.com/account/password-reset?token=72803688-78dd-4fd6-8efd-d8d8a289fe51, and the error message is "The requested resource (/dereferrer/) is not available.").
Somebody else experienced a similar problem : Logging into the Chat site
UPDATE : In answer to a comment below, I provide the following data :
OS : Mac OS X 10.4.10
Browser : Firefox
What happens on other machines : similar : I cannot log in and the password-reset link does not work