It definitely looks like the MAC addresses are not changing. There is only one other reason that this might happen this way, it could be based on the user you are logged in with. Do you login to your machine with the administrator user? When you installed this were you using the same user you login with?
The reason I ask is because the license file is stored in a directory specific to your user, if you installed with a different user than what you use the program with you could have this problem. The activation routine is looking for the file in your users location and if it is not found then you will be prompted for activation again.
Please post back with this information about your user's and the install so we can determine if this might be contributing to the problem.
