I've got a laptop running network-manager with kde. Apt sources are nfs mounts with file:// urls. Upgrading dbus disconnects the cabled network, aptitude will then be unable to load and unpack packages from the network.
A workaround exists: running dhclient eth0 re-starts the cabled network connection, one can re-start aptitude and resume the upgrade. Regards, C. Dominik Bodi
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