Cannot check box for hardy-security updates

[Mario Vukelic]

software-properties-gtk is at 0.63ubuntu1

I always had hardy-security, hardy-updates, and hardy-proposed enabled in Software Sources. Today I checked in there for some reason and found that hardy-security was suddenly not checked. I tried to check it, but it refused to stick. I looked in sources.list (attached) and found that there, hardy-security is enabled as it should be.

When run from a terminal, there is no error output when trying to check the box.

[Mario Vukelic (kreuzsakra)]

Hm, in fact hardy-security is in sources.list twice. Though removing the redundant lines does not help.

[Dimitrios Symeonidis (azimout)]

Confirmed. I also hadn't noticed before... and I also had it twice in my sources.list.
I have noticed that, when you click it, it does seem to understand that something has changed and askes you to reload the repositories...
Notice also that it appears under "Third-party Software"...

[Mario Vukelic (kreuzsakra)]

The "third-party" thing is interesting. When I delete it from there through the GUI, it's gone from sources.list, too, as expected. When I then try to check the proper box (on "Updates" tab) again, it still refuses to stick, but the security lines are added under "third-party" again.