i quess u mean the "advertising-bar" below the option advanced mode ("erweiterter Modus").
this is in english here too, i think it either have been never beeen available for tranlation or have been forgotton.
but i would say the first option would be the one to prefer.
do you mean you get the Message: "Windows 8 hindert Metro Anwendungen daran auf einen lokalen Proxy Server zu zugreifen; globale Proxy Einstellungen brechen eine Internetverbindung ab [...] even you are using Windows 7 and not Windows 8?
If so, have you ever had installed Windows 8 (evaluation-copy or in an different partition)?