ZCM 10.1.3, Win XP Pro, no domain controller, using DLU on the workstations and delivering group policies (including where to find an internet time service) through ZCM.
I have a handful of client machines that are off by about 15 minutes on their computer time but only when those users are logged in. When I log in the time is correct. We are local admins on the machines and any policies are related to the machines and not to the users.
I've cleared cache, unreg, rereg the machines can't think of anything else to do to fix the issue.
Any ideas out there? I already have a flat forehead from trying the bouncing my head off the desk approach.