When I visit the site and login via the top left box, the list of visitors shows me as being on the site but my avatar isn't appearing in the top left as it was yesterday. Instead i can see the login box again. I can post etc and have full privileges as if i was logged in properly. When i leave the site and visit again, it asks me to login again. Even though the remember me option is ticked. I'm not blocking cookies and have not changed any system settings since overnight. Any ideas?