Violet, I am getting the same issue with the buttons changing to green as Unibot is getting. I am using Chrome 8.0.552.224 AdBlock 2.2.23 previously 2.2.19 (but will recheck and edit post) and NS theme Century Wide RMB.
EDIT: rechecked with AdBlock 2.2.23 still having the same issue. Issue does NOT rectify with AdBlock paused, so I dont think thats the problem. Oh, and I am using a Dell Latitude E5400 with Windows XP Professional SP3 if that helps.
It appears as well that recently the network admin for the network I use has installed OpenDNS somewhere on the network, not sure what it is but it might explain the new IP address from my nation, and I have moved home recently, just so you know. As far as I am aware, no one else using the network I use plays NS.