I got tired of this question so I'm writing the explanation here once and for all.

First of all, the logout code is extremely primitive and has not been changed for years. It literally looks like this:

setcookie("member", "",time()-100000,"/");

This simply tells your internet browser that cookie "member" where your login session data are stored has an expiration date in past and thus must be deleted by the browser. This is totally complying to the specifications.

If this code does not work - that means either your browser is not processing it according to the specifications, which is, by the way, very unlikely unless you have installed some addons or your internet provider employs very stupid admins who can't correctly maintain their caching proxies or firewalls or other kind of routing servers.

I had this problem myself once when one of my internet providers decided to mess with their software - half of the sites was showing me outdated contents, side effects of which were - I could not logout of some sites or could not login in some that I was not logged in before. I even physically deleted login cookies from the browser and tried to view the sites through other browsers I was not even logged in ever on those sites - it was still showing me that I logged in. Luckily it lasted only one week, then they managed to get their shit straight. But it was very frustrating. Via another internet provider all worked fine in the same time.


Bottom line - I have nothing to do with this and I cannot cure this. There is nothing wrong with logout on this site's end. You can try deleting cookies manually, google how to do it in your particular browser. For example, for IE - only registered users can see external links just be warned that in IE you will delete all your cookies, not only for this site. In Opera you can delete any specific cookies.

But, as I said, if the problem is in your internet provider, this won't help.