Dear list, I have a SAMBA server sharing files and authenticating users in one of my University Labs - LAB A. Now I have two other labs, on two different subnets LAB B and LAB C. If I configure a client computer on LAB B or C, using a valid LAB A address, everything works fine - this seems to mean physical connections are allright (the labs are connected through optical fiber). If I configure a client computer on LAB A (the original LAB) using a valid LAB B or C address, everything works - this seems to mean addressing is Ok. However, neither LAB B or C are able to authenticate within SAMBA with their own subnet addresses. I am able to ping any lab machine form any other lab machine, so routing must be Ok. Any hint? Any timeout I should worry about? Regards, Luciano