'E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/ca.archive.ubuntu.com_ubuntu_dists_natty_restricted_binary-amd64_Packages, E:Les listes de paquets ou le fichier « status » ne peuvent être analysés ou lus.'

[Carl Dufresne]

Binary package hint: ubuntu-docs

could not even open update-manager

[Fritz Kassner (fritz-kassner)]

I have the same problem on the 32-bit-natty narwhale System:
E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/de.archive.ubuntu.com_ubuntu_dists_natty_main_binary-i386_Packages, E:Die Paketliste oder die Statusdatei konnte nicht eingelesen oder geöffnet werden.'

[Matthew East (mdke)]

This doesn't sound like a bug with ubuntu-docs, moving to "apt".

[Fritz Kassner (fritz-kassner)]

In addition to my bug report I can provide the following information:
Applications with malfunctions:
- update manager
- ubuntu software center
- synaptic package manager
- apt-get check

Last correct system update on 2011-05-17:
- apturl-common (0.4.2ubuntu5, 0.4.2ubuntu5.1)
- apturl (0.4.2ubuntu5, 0.4.2ubuntu5.1)
- flashplugin-installer(10.3.159ubuntu1, 10.3.181.14ubuntu0.11.04.1)

No change since last update