Can't get rid of precise-proposed

[Helmut Schneider]

Nils Kassube wrote:

> Helmut Schneider wrote:
> > I played around with sources.list and added an entry for
> > precise-proposed. After understanding "proposed" I removed the
> > entry.  But I'm still offered proposed packages. How do I get rid
> > of it?
> 
> Did you run
> 
> sudo apt-get update
> 
> after changing your sources.list? Furthermore check if there are any 
> files in /etc/apt/sources.list.d/ which might still have an entry for 
> proposed.

Yes. And no further entries.

> > helmut at ubuntu:~$ sudo aptitude show postfix
> > Package: postfix
> > State: not installed
> > Version: 2.9.3-2~12.04.2
> 
> That doesn't look like a package from proposed:
> 
> nils at alix33:~$ LC_ALL=C apt-cache policy postfix
> postfix:
>   Installed: 2.9.3-2~12.04.2
>   Candidate: 2.9.3-2~12.04.2
>   Version table:
>  *** 2.9.3-2~12.04.2 0
>         500 http://de.archive.ubuntu.com/ubuntu/ precise-updates/main 
> i386 Packages

But:

helmut at ubuntu:~$ sudo apt-get changelog postfix
postfix (2.9.3-2~12.04.2) precise-proposed; urgency=low
[...]
helmut at ubuntu:~$

Or is the "precise-proposed" misleading?