How does this happen??

I'm pretty sure all cigars will come with beetle eggs. Just the nature of the beast. Usually eggs hatch when the temps rise above 75F. If your temp control on your honeywell is correct than the culprit might lie with something you've received recently. However, since there are 10 cigars with damage those little buggers could have been at it for awhile, perhaps before November.

I think freezing them, as opposed to putting them in the fridge, kills the live bugs. I personally don't think that freezing them kills the eggs, but what do I know. Just make sure your temp stays below 75F. Good luck and hope 2009 is better than 2008.