Strange Permissions problem when creating new Open Directory user

I just set up a mac lab to authenticate to an Open Directory server which also stores home folders. All of the initial users I created work fine, there were about 50 users that I set up. When I added a new user this morning though, it would not allow him to access anything within his home folder (i.e. nothing worked)

I went back to the server and took a look at the Users share and noticed that when his accound was created, instead of setting the owner of the folder to his username (xxx123) it was set to his userid number (1024). I did a chown on his directory to his username and he was then able to access his home directory from the clients.

I realize I found a fix, but I would prefer to not have to do this every time I create a new user. Why is this happening?