I went to stackexchange.com and clicked on SO. After a few minutes I got a message saying "We have detected too many requests from this IP. If this is an error contact us." That was the second SE page I tried to visit. Second only to SE.com
I moved to another machine and it's working now. The first machine usually works, I don't know if a got assigned a blacklisted IP or what. Anyone know what's going on?
EDIT: I would really rather not post my IP on the web, but if a diamond or dev asks I'll email it.
EDIT 2: I looked at badp's dupe suggestion and can verify that I have no scripts frequently calling SO.