Forum Forum logs off users
 

My members and myself are having a problem after doing a upgrade to 4.0.5. when you login you get the re direction page and when back on forum you are not logged in, if you repeat the login process the same thing happens, clearing cookies, clearing cache trying a different browser does not help. IE, Opera, Chrome all have he same problem, members state that if they do get to login each time they navigate to another page they have to re login, after one or two times they fall into the not be logged in state and cannot use the forum.
Info - cookie domain suggested choice is (blank) ?