I got a strange bug when login in the forum.
On the main page it says "wrong password", then on the separate try-again login-page I use the exact same password and it works.
First I thought it's something with my cookies cause I have problems with another website too on my laptop, but now I confirmed it on another pc.
I use the save password-function of firefox but I haven't changed my password anytime so there should be no conflict. Plus it's the same when I type the password in by hand. However I don't really need a solution, just wanted to dump this here in case anyone knows the problem and has a fast answer.