login timeout

Is there a way to change the LoginTimeout *per login*? I am running the 
gateway in passive mode and can insert the desired value for login 
timeout in the redirect from the auth server back to the gateway during 
login. I can see (in nocat.log) that the correct value is read by pgp. 
But then the default LoginTimeout (or the value set in nocat.conf) seems 
to the one that gets used. I can tell this by timing the logout and by 
looking up 196.168.168.1:5280/status.

thanks
-arun