Please help me in my fervent quest to keep from losing my mind: In mid-January we updated a site's GA tracking code to eliminate data from self-referrals. Looking back over the month, the site experienced a a fairly significant and constant daily drop in traffic from all sources beginning on that day. That's not stopped, and it's by the same amount of daily visitors. I've checked everything I can think of - I compared data before the update and after on number of pages generating traffic (I thought maybe the developer missed some pages when he loaded the new code), number of sources (referrals (which I expected to go down, but only by the number of subdomains) and direct) generating traffic, etc. I can only think that there's something glaringly obvious that I'm not seeing. But what?!?!?!