I brewed a California Common recipe that I've used successfully in the past on 10/15. I used Wyeast 2112 and made a starter that got going pretty well so I was feeling good about the brew. It's been bubbling in the airlock since then, though it has slowed down by now (bubbles every 30 seconds, roughly).
I took a measurement a week ago, thinking that the gravity would be pretty low since it had been bubbling for awhile, but to my dismay it was still at 1.040 (OG was 1.082).
My question is, is there a problem that it's taking so long to get down to a reasonable gravity? Or should I just let it continue to ferment and hope that it gets there eventually?