@ dENd: That's super strange and makes no sense. Are you using proxy stuff or a browser which sends random client information to websites? Because this is how the language detection works (it's really simple):
Is there a cookie set with the current language setting?
Yes Just use the setting from the cookie!
No Try to auto-detect the language from the information the browser sent with its http request (defaults to English when nothing German has been found)
Clicking the language switch button will automatically create a cookie to save your language choice.
@ DC:
It must be either Chrome caussing this or meh' cookies.
Either way its not that much of a problem, I saw a lot of more bugs related to this site but it doesn't bother me.
One of them being this language switching and another being that after I enter a forum post it marks ALL posts as read after going back to the main site.
PS
Could the pink version of the site cause this since im using it?
I'm using Chrome too (and I bet many other users of this website as well) and it's not causing any problems. You may try to remove all cookies for UnrealSoftware.de and restart Chrome.
The only other things which might cause this might either be your cookie settings or strange addons/plugins.