Zend certified PHP/Magento developer

Profile loaded even after reboot

I manage an AVD machine and multiple users are logging in everyday.

The question I have is why accounts stay loaded even after reboot.

Here a screenshot of the accounts profiles

List users (Yellow have not logged today)

Anyone know how to force the unload of profile. Two of them have been in leave of absence since february and are still loaded on boot. Makes no sense.

We force reboot the computer every day at midnight.

Thanks