When clicking on a category title on default.asp, there is no tree like navigation on the resulting page. Granted, all you need to do is click the back button, but it seems that to be consistent, the navigation should be there. Is there any reason this was omitted?
There's also a "Show all categories" link in the same place same the pink/yellow link on the active.asp page.
The problem I can see is, if the tree nav only show the parentage, then there's really only one node in the tree. All other options have more than one node.
IMHO, it's fine like it is, but I do see that comment every so often.