mantis time out issue

I have configured Mantis, the thing is after sometime if I stay idle, Mantis sort of timeout. I refresh the page again and again but it does not load Mantis at all. Whenever I restart XAMPP it starts working fine (until I don't sit idle).

Here are some settings that i have seen w.r.t exipration

# token expirations
define( 'TOKEN_EXPIRY', 60 * 60 );

# Default expiration of 60 minutes ( 3600 seconds )
define( 'TOKEN_EXPIRY_LAST_VISITED', 24 * 60 * 60 );
define( 'TOKEN_EXPIRY_AUTHENTICATED', 5 * 60 );
define( 'TOKEN_EXPIRY_COLLAPSE', 365 * 24 * 60 * 60 );

Can someone tell me how to get through this timeout thing whatever it is? I am using "Mantis 1.2.8".

Solution

this is what u need to do. On authentication_api.php you must comment this part like this

$t_login_methods = Array(
    MD5,
//      CRYPT,
    PLAIN,
);

and it will work found that from mantis forums.