Find the following in global.php
Code:
setcookie("bbuserid",$userinfo[userid],mktime(0,0,0,0,0,2020),$cookiepath);
setcookie("bbpassword",substr(md5($userinfo[password]),0,strlen($userinfo[password])),mktime(0,0,0,0,0,2020),$cookiepath);
change it to:
Code:
setcookie("bbuserid",$userinfo[userid],0,$cookiepath);
setcookie("bbpassword",substr(md5($userinfo[password]),0,strlen($userinfo[password])),0,$cookiepath);
Now the cookies that the board sets will be temporary and be erased when you close down the browser.