If I create a node under "Content" called "Home" (or anything, really) then create another node under "Content" called "default" and publish them both, viewing the default.aspx page will display the content form the "Home" node instead of the "default" node. This is likely because Umbraco publishes the first content node under both the name of that node and under "default.aspx". I would think that Umbraco should resolve the name collision by, say, naming the page for "default" as "default_1.aspx". Or, it could prevent a user from creating a node called "default" as a node under "Content". Another option would be to display a message (when the user tries to publish) that says "Could not publish 'default.aspx' as that is a reserved page."