I can confirm the ....... connection. There was recently an update of ....... plus. After applying this update, it seems that the CSS stylesheets fail to load, resulting in the basic non-graphical look. After disabling ......., things look usual again. This was on 2 different machines, both running FF 3.6.13 under windows XP.
One can submit a problem report to ad-block by clicking on the icon in your browser. If enough people do it maybe they'll realize the problem and fix it.