Just wanted to notify the staff, that there are some signup issues. I finally managed to sign up. I tried with 2 other emails of mine, but they were "already registered" (couldn't use those emails), but when I tried to login with the username I always use with - WordPress Forum said "Username doesn't exist, register it ?".
When I tried password recovery - I actually entered the username (that I think I always use with the specific email) and I got a new password to my mail.
Clearly there is some DB Issue. I hope for a fix soon (and to get my other 2 accounts deleted :) )