I have a Mac OS 10.7 server, and a number of 10.6.8 clients in a school. For the last year and half, network accounts could log into the clients with no problem. There is a set of presets in Workgroup Manager for correct default Group (staff vs students), home directory path, etc.
Since about May, all new accounts cannot log into the 10.6.8 clients. Old accounts (created pre-May) still can, and not just with cached credentials (clients wiped and restored). An OS 10.7.4 client CAN log in with the new account, just not the 10.6.8 ones.
I have checked all of the usual subjects (DNS issues, path issues, file permissions) and the logs - nothing. I can connect to shares using the new accounts (Connect As...), just simply cannot log in.
Anyone have any idea? I have pretty much exhausted what I can think of. I do find it interesting that we started having issues at the same time as the 10.7.4 update.