Yay, got adsense & analytics working together again!
For about a month, the adsense clicks and impressions have stopped showing up in my google account, and its been driving me batty tryig to figure out what it was.
I finally found it last night, a tiny setting in the drupal google analytics module in advanced settings where is says "Track AdSense ads - If checked, your AdSense ads will be tracked in your Google Analytics account."