MCX settings not always applied

We are using the Magic Triangle with Mac clients authenticating to AD and OD. Our managed preferences are not consistently being applied upon login. - Xserve bound to AD - One Group made under OD on the Xserve. AD groups are then made members of this OD Group. The AD group is made up of students - Managed preferences are applied to the OD group - Mac client bound to AD with the "Create mobile account at login" checkbox checked - Mac client LDAPv3 settings list my Xserve with LDAP Mapping set to "From server" - The authentication search order is AD before LDAP(OD) - I login on the client as a student the first time and managed preferences are applied - I restart the machine and login as the same student, managed preferences are not applied. I then login as a different student who has never logged in before and I get managed preferences. - Every time I get my home directory via profile set in AD The Xserve and Mac clients are running 10.4.10. Any ideas?