When you move out of a page or menu item you edit. If you use the back button a lock symbol is shown.To remove the lock simply edit the menu and click close or save button. This will remove the lock. If are stuck and you are unable to edit the menu...

Joomla configuration has a set up to make the site "search engine friendly" SEO. The Apache module mod_rewrite does all the trick. The complex url which are not search engine friendly eg...