Windows 8 activation oddity

I just installed the RTM version of Windows 8 Enterprise from my MSDN subscription and I experienced an odd activation issue.   During the install I was not prompted for a product key.   Once the install is complete activation fails with error 0x8007232B.   When you view the activation center it reports that the installed product key ended in CWCX7 (even though I never entered a key).   In order to activate I had to change my key using the slmgr command line application to the one assigned to me by MSDN.

1)  Run a command prompt as administrator

2) slmgr -ipk xxxxx-xxxxx-xxxxx-xxxxx-xxxxx    (replace with the correct product key)

3) Try activation again

This wasn't a fluke either -  I've seen the same thing on 3 different machines that I've installed it on.