Bug#599523: #599523 [update-manager-gnome] wants to downgrade packages without any notice

[Evgeni Golov]

Hi Zoran,

I fear your problem is your pinning.

> $ apt-cache policy libgl1-mesa-dri
> libgl1-mesa-dri:
>   Installed: 7.8.2-2
>   Candidate: 7.7.1-4
>   Package pin: 7.7.1-4
>   Version table:
>  *** 7.8.2-2 990
>         200 http://debian.iskon.hr/debian/ experimental/main i386 Packages
>         100 /var/lib/dpkg/status
>      7.7.1-4 990
>         700 http://debian.iskon.hr/debian/ testing/main i386 Packages
>         300 http://debian.iskon.hr/debian/ unstable/main i386 Packages
>      7.0.3-7 990
>         400 http://debian.iskon.hr/debian/ stable/main i386 Packages

Candidate is 7.7.1-4, NOT your wanted 7.8.2-2.

Can you paste the output of `apt-cache policy` and the content of
/etc/apt/preferences and /etc/apt/preferences.d/*

Regards
Evgeni Golov