I am looking to have my log files named by the user's unix username as it exists on the samba server, not the username that the client requests. Logging in from a Windows 7 client with username Bryan. I have mapped Bryan to a unix username bry. When I use %U in my log filenames, it expands to "bryan". When I use %u, it doesn't expand, it appears in the log filename as a literal "%u" smb.cnf: log file = /var/log/samba/%u-%m.log /etc/smbusers: bry = Bryan Log filename == %u-438-bv.log Samba 3.4.7 running on Ubuntu 10.04