Is this in SS3? I've experienced a few weird things with pages, like pages showing when they shouldn't, children showing at top level and pages displaying in the wrong order. Most of the time it fixes itself with one or all of these things:

• Edit any page and save the changes
  
• Flush
  
• Build
  
• Delete page from live and draft, re-add page
  

Hope one of them works for you!

If you're editing a page you should have buttons that say:

• Unpublish
  
• Delete from the draft site
  
• Save draft
  
• Save and publish
  
• Preview
  

Once a page is published, if you choose "Delete from the draft site" you then get the option of deleting from the published site to remove it completely. It'll still show up in the page list as you can restore deleted pages, but you can now create a new page with the same name, url etc.

Any use?