Bug#574072: apt-get upgrade re-upgrades same packages over and over (to same already installed version)

[Sten Heinze <sten.heinze@gmx.de>]

Am Mittwoch 17 März 2010 18:53:34 schrieb Sten Heinze:
> I compiled my own apt version 0.7.25.3+patch r1962 (and I had to add the
> build-deps of r1959 to make it build, both from the mentioned bazaar repo),
> and it fixes it:
> # apt-cache policy libqt4-designer
> libqt4-designer:
>   Installiert: 4:4.6.2-1
>   Kandidat: 4:4.6.2-1
>   Versions-Tabelle:

However, after having the system up for some time (hours), I ran into:
# apt-get update
[..]
OK   http://ftp.de.debian.org experimental/contrib Packages                                        
Speicherzugriffsfehleresen... 27%                                                                  

This continues after it started, independent which program or parameter I try, 
apt-get update, apt-get upgrade, apt-cache. Dpkg helped to get apt working 
again, a restart did not fix it.

# dpkg -i /var/cache/apt/archives/apt-utils_0.7.25.3_i386.deb 
# dpkg -i /var/cache/apt/archives/apt_0.7.25.3_i386.deb 
# apt-get update                                                            
[..]
OK   http://ftp.de.debian.org experimental/contrib Packages                                         
Paketlisten werden gelesen... Fertig                                                                

Obviously I'm now back at my original problem:
# apt-cache policy libqt4-designer
libqt4-designer:                                          
  Installiert: 4:4.6.2-1                                  
  Kandidat: 4:4.6.2-1                                     
  Versions-Tabelle:                                       
     4:4.6.2-1 0                                          
          1 http://ftp.de.debian.org experimental/main Packages
     4:4.6.2-1 0                                               
        500 file: ./ Packages                                  
 *** 4:4.6.2-1 0                                               
        100 /var/lib/dpkg/status                               
     4:4.5.3-4 0                                               
        500 http://ftp.de.debian.org testing/main Packages     
         50 http://ftp.de.debian.org unstable/main Packages    
     4.4.3-1+lenny1 0                                          
        500 http://security.debian.org stable/updates/main Packages
     4.4.3-1 0                                                     
        500 http://ftp.de.debian.org stable/main Packages          

Upgrading to my patched version of apt keeps apt working and fixes my problem 
again:
# apt-get install apt apt-utils
# apt-get update
[..]
OK   http://ftp.de.debian.org experimental/contrib Packages
Paketlisten werden gelesen... Fertig

I am unsure by what this is triggered, since I had it twice since starting to 
use my patched apt-version. How can I find the cause? The apt-version in 
experimental does not have the patch [0] yet, correct?

Sten

[0] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=351056#87