Just the local client is installed on the machines. The passwords are also reset while the machines are online, even if it is reset via pressing Ctrl+Alt+Delete and changing password that way.
The only difference between the user's affected and the ones not affected is that the ones who have the issue have also had Adaxes self service client installed locally.
Each user is linked to a specific machine, so logging onto a different machine with a user wouldn't sync the password anyway unfortunately.
I was just wondering if you had seen anything like this before as it's a bit of a strange issue.
Dan