I am running TS server 2003

I am not sure that this is a TS setting; however, my TS session seem to logout after a specified period of time. I am not referring to the TS connection, as it is set to stay connected indefinately (which I believe is the default setting for TS sessions. I am referring to the user having to log back into the TS desktop. I do not have a workstation lock setting on the workstations in my domain, and this isn't locking the station, it is actaul logging the user off (TS connection remains). Do I need to change this setting at the AD level via a GPO or is it s local setting on the TS server?

Actually the TS session is locking out at a specified time and not logging the user out or disconnecting the TS session. I do not have my domain configured to lock users out; however, I am not sure that this convers TS session. The TS session that I am testing with also logs on locally to the domain on a workstation and never gets locked out (due to how my domain configureation). Where is the desktop "lock out" setting for TS sessions configured?