I have a problem with my contacts in conjunction with google+. Like most, I had already a lot of people in my contactlist, which is synced with the contacts in google mail. With google-plus, I have added a lot of people to circles. Those people from Google+ are now all individual entries in my contacts, but only on the phone.
After deletion I recognized, that all people are also removed from my circles.
So how to add people to circles, without having them appear as duplicate contacts?
EDIT: Thanks anyone, yes, some of you are right - it seems that those people are put in an extra list "Other contacts" (also visible in the web interface). You have to uncheck this group in the settings > displaysettings. Can someone of those people put this in an answer, so I can accept it, thanks :)