When I open system/package/repository and try to view the three subnodes (squeeze, wheezy and wheezy-security) in order via the ">". I first click one node the node's attributes is shown to the right of the node tree. If i click any other, or the same node again, it's marked red as for deletion, and if i click any other the same happens. I have tried other parts of the tree but after trying some branches, for example "service / mdns / repeater" I have not had the same behaviour.
I actually tried to click one of the three subnodes ">" and then any node under "service / mdns / repeater" and the repository nodes was again marked red.
What's the magic with the repository nodes ? Image may be NSFW.
Clik here to view.