Hi, I was looking at the log files and would like to know about the SID's in Samba. The following are the statements in the log files.Can any one give a link/explanation to this. user token sid S-1-1-0 user token sid S-1-5-2 user token sid S-1-5-11 uid 500 registered to name guest Regards, Sreenivasa Prasad V.