I solved this with the instructions listed below. The problem was that the domain name for user B was the hostname of the server and not the 'workgroup = HOME' from smb.conf. Any ideas what caused this problem in the first place?
-Instructions Use pdbedit and make sure that the DOMAIN line contains the correct domain name: # pdbedit -Lv your_username if it doesn't contain the correct domain name do the following: # pdbedit -i tdbsam -e smbpasswd # pdbedit -i smbpasswd -e tdbsam http://lists.samba.org/archive/samba/2008-October/144077.html -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba