OS X 10.4.9 Server + SMB Network User Homes problems

Hi, Today, I have a new problem to tackle. This time, it is making SMB network user homes work, under OS X 10.4.9 Server. To paint the picture: 1. I have a stand alone open directory master configured. It lives on, for want of better IP: 192.168.0.10 2. I have a windows/solaris/other box, with an SMB share on it, "world" writeable, living on 192.168.0.20 3. I have created an automount for this SMB share within the Mac OS X server NetInfo preference pane. This was relatively easy to achieve. After this, I set it up with a mount-record within WGM so that it was shared out via both AFP and SMB. 4. I created a test user - and ducted his/her home area to the available home area's within the "Home" tab of the WGM. I pressed "save" and "create home directory now" button. Sure enough, on the other side of my little test lab, the directory popped up within my /networkuserhomes dir on the SMB share. Within this, was the correct skeleton I'd expect of a network userhome: [i] /Applications/ /Desktop /Library /Movies /Pictures ...etc.[/i] 5. So, I took a client machine, popped into the admin account and went into "utilities". At this point, I ticked "LDAPv3" and configured it so that it pointed at 192.168.10 (the Open directory master). All seems well so far. 6. Next, I logged out of the admin account - and (as expected), on the login window "other" was available, suggesting network user homes were available. Good, I thought. 7. I try to log in with my test users credentials. It crunches for 5 seconds, then comes back with a classically/tragically ambiguous error: [i]"The account is unavailable at this time - the home folder for the user account is located on an AFP or SMB server. Contact your systems administrator blah blah blah"[/i] What? Have I missed a crucial step here? All my mappings look correct. It made the home directory in the right location - what has gone wrong? Permissions? Authentication? Thanks. :) z.