BTW, some people on the German Wikipedia are complaining that they are
getting logged out after a few hours. I remember that there was some
discussion about this problem some time ago, and I thought someone had
fixed this. Or is this again a browser problem?
You have to check the 'Mein Passwort merken' checkbox in the login
screen. Maybe this checkbox should be placed near the 'Anmelden' button
and not near the 'Neues Benutzerkonto anlegen' button to be better noticed.
WeißNix