Windows 2003 Server reactivating itself

I am having a problem with Windows 2003 Server reactivating itself although there have been no significant hardware changes. Here is some background on our problem.
We are using a VME-based Single Board Computer with the following setup.  There are two Ethernet ports on the board.  We are using port 0 as a static IP for an internal network, and port 1 for a network with access to the internet for product activation, updates, etc.  When we add software to the hard disks we use a SCSI CD-Rom which is not present in the system during normal operation.
Recently, I have seen more than a few of these systems requiring Windows reactivation and this made me wonder about the licensing process.  I know that there is a hardware hash created by 10 hardware characteristics and that it is a tolerance based on a voting mechanism and all this makes me wonder if the nature of my development environment has created a system that is vulnerable to the windows reactivation process.  
If I understand the process correctly, there needs to be 7 or more matching points to keep the activation current.  In my case since the CD-rom is not present in the system that is in the field, that is one change in the hardware hash.  To avoid confusion, I disable Ethernet port 1 (the one with access to the internet used to activate windows) which, if I understand the process, counts for 3 in the voting scheme used to determine activation status (making the total of my hardware changed 4 and putting me over the threshold for activation, thus requiring reactivation).
My question is two-fold.
1.  Is my understanding of the activation process accurate?
2.  Assuming my thought process is correct, instead of disabling Ethernet 1, if I keep it active will this prevent Windows from requiring reactivation?
Any information that could help in figuring out why this is happening would be great.

Who is Participating?
1)  Pretty much, yes.  The NIC counts for 3 votes and the CD-ROM counts for 1 - so that puts you under the 7 *yes* votes required.
2)  Leave the NIC enabled - unplug it if you must.

Here is a pretty good article:

Hope this helps.
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