samba - Dec 2002 - does samba server knows abt client status....

hello,

 usually whenever a client tires to login in to samba...there is a 
log file created in /var/logs/log.<net-biosname>
similarly is there any notification to the server when the client 
logs off the session...or client shut down the system.
does anyone have the idea...and help me with the details....
pls furnish me the details if u have....
thank u....
prasad