Candidate python-apt0.7.4ubuntu7.1 unselects security-updates sources

[viktor]

Binary package hint: python-apt

After I upgraded from python-apt (0.7.4ubuntu7) to 0.7.4ubuntu7.1 - through Hardy proposed - it becomes impossible to select hardy-security in update sources.

First reported as a bug through Synaptic
https://bugs.launchpad.net/bugs/245328

before I forced back to python-apt (0.7.4ubuntu7) to fix the issue.

Two minor issues remain:
+ new upstream version filter is still displayed while there are no longer packages in that category
+ when reloading back after unchecking hardy-proposed several error messages mention duplicate sources (this no longer shows up after restarting synaptic)