case sensitivity with login information on windows and duplicate user entry in session table

[Karmadude <karmadude@…>]

I have trac setup to use windows domain authentication. When I login using firefox, everything is in lowercase, and and entry is made in session table:

example: domain\username

Now if I login from IE7, since I am on the domain, IE7 automatically logs me in, but everything is in uppercase now and a second entry is made to the session table for the same user, but with uppercase characters.

example: DOMAIN\UserName?

[cboos]

See also #4560. It's not yet clear yet whether the "Missing or invalid form token. Do you have cookies enabled?" error reported there is caused by the problem reported here or not.

[cboos]

See #2310.