On our client's site, I've set the "Exclude Tracking for" to contributors. (did so about 3 days ago). As I remember, from discussion on your web site, that should exclude all traffic when logged in for all users, "contributors" and above. BUT it doesn't seem to be working right, as over the last several days, there are 8 total visits shown on GA for my city, but only 2 are new visitors.
I tried excluding I.P. addresses before, using the GA filter to do so, but that isn't working either.
Also, the blue box on the dashboard, which normally shows "visits" "visitors" "page views" etc. keeps showing 0 info. What is going on? It has normally worked fine on other web sites.