I've just installed MiniBB and am testing it before releasing it to my group. I discover that the Logout or Sign Out links don't consistently work. I have tried logging in using Safari, Firefox, and Chrome. With Safari it seems to work. But with the other two browsers, if I click on Logout or Sign Out (they both lead to index.php?mode=logout) nothing changes. The page still says that I am logged in. However, if I try to access my profile it says "I can't do this". But I can still post messages even though I am supposed to be logged out.

I have done some customization but I have not changed the code in index.php.

I just checked again. Even though the web page said I was logged in after I logged out, the posting I did appeared as "Guest" rather than under the Username -- so I guess I was logged out, even though the page was not refreshed to the start.