Last modified: 2010-05-15 15:51:56 UTC
In this message: Warning: You are not logged in. Your IP address will be recorded in this page's edit history. Why not add a link to the word "login" to the login page? But then you need a return_to page, etc... Hmmm... Yes, there is a link to login in the navigation further down on the page.
The word "login" doesn't appear in the message you quote, so there's no good place to put it -- and as you mention there's already a link.