Thanks so much for the quick response.
You are right. I disabled TACO (something I should have done to begin with), and I have the same issues:
* when I am in Firefox and do a search for something like "car insurance", I get only the top 2 ads - the ads above the organic search.
* when I am in Safari, though, and do the "car insurance" search - I get all ads: the ads above the organic search AND the right-hand ads.
I tried removing the adwords.google.com cookie plus all cookies with "google" in them. And, I made sure I was signed OUT of google.com. However, the results did not change.