title: ASP.NET cookie wrongly shared between two sites
body: <p>I have two ASP.NET websites running in IIS Express as <code>localhost</code> with different ports.  I am using <code>FormsAuthentication</code> to remember logins through cookies.  However, when I login or logout of one site, it affects the other site, so they seem to share the same cookie.</p>
  
  <p>Is this a common problem, or can I tweak something to avoid this?</p>