I have the same Problem like this.
but the solved date: 07-22-2010
Now my question.
Is this still relevant today?
Here an short Summary:
My Proplem.
We use the GMS Software 6.2.0.0
When we create an new Account - with an activation or deactivation Date in the future - there will only be activatet/deactivation - when we open the "GMS" manualy on the Server.
Thats realy stupid - when we Admins come at 10am into the Office and the Ticket must be activatet on 8am :D