You know, I just smoked a Cien anos Churchill this afternoon and I thought it was a little off as well...just didn't hit like they have before....I've had mine a little over a year as well...
Jose Blance (with La Aurora) will tell you that cigar will be good for years and years...I think I have to agree but the one I smoked today was mild and rather bland.....
I'll try one of the Coronas I have and see how those are....