http://vgchartz.com/hwcomps.php?cons1=X360®1=America&cons2=X360®2=America&cons3=X360®3=America&start=39026&end=39453
Look at this chart from 11/4/06-1/1/08. There has to be more to the shortage than "unexpected demand". While the sales are better in 07's holiday, they're not better enough to warrant a shortage.
Changing factory lines? Retrofitting RRoD fixes? New SKUs? Dunno, but blaming the holiday season makes no sense.
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