Some Content Management submenus mislocated

I love the Administration menu but have found a small problem.

I created several CCK types, including two called Generic Page and Home Page (internal names page_gen and page_home).

Under Content management > Content types, I find menu items Edit Generic Page and Edit Home Page, but unlike the other content types, there are no submenus.

Instead, the submenus for these two types show up under (Drupal icon) > Administer. The Administer submenu reads Edit, Edit, Manage fields, Manage fields, Display fields, Display fields, with the last four all having their proper submenus.

It is, of course, suspicious that the two content type names both start with "page." However, I have not seen any other ill effects of naming them that way.

I'm running D6.6 and latest WAMP.