Honestly, it's enough to make you scream. :-( I can't seem to mount a samba share: $ mount -t smbfs //workhorse/OldHome /network -o username=DACRIB+turgon,password=xxxxxx mount error(13): Permission denied Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) (I'm logging into this laptop as the domain user DACRIB+turgon, domain = DACRIB. That part works perfectly.) I have the share name right, and I can query the list of shares on the other server: DACRIB+turgon at turgon-laptop:/$ smbclient -L workhorse Enter DACRIB+turgon's password: Domain=[DACRIB] OS=[Unix] Server=[Samba 3.4.0] Sharename Type Comment --------- ---- ------- print$ Disk Printer Drivers OldHome Disk The Old Home Folder Photos Disk IPC$ IPC IPC Service (workhorse server (Samba 3.4.0, Domain: DACRIB, Server: workhorse - NT1)) Domain=[DACRIB] OS=[Unix] Server=[Samba 3.4.0] Server Comment --------- ------- WORKHORSE workhorse server (Samba 3.4.0, Domain: , Server: Workgroup Master --------- ------- DACRIB The folder on the server is chmod 777. The share definition just says: [OldHome] comment = The Old Home Folder path = /OldHome Windows stations on the LAN can see the share, and access it. It's just this Linux laptop that can't seem to mount any shares. (I get the same error trying to mount any share, either from workhorse or from an actual Windows share). I don't know if this has anything to do with it: root at turgon-laptop:/var/log/samba# wbinfo -a turgon Enter turgon's password: plaintext password authentication failed Could not authenticate user turgon with plaintext password Enter turgon's password: challenge/response password authentication succeeded root at turgon-laptop:/var/log/samba# I don't know why the plaintext failed, but the challenge/response password worked to authenticate. And I know I am using the correct domain ID and password. Where to investigate next?