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.

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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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Windows Server 2003

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