hmmmm....I just downloaded that extension, I saw in one of your posts turf...not I see this ....weird
It must be conflicting with another plugin or the version of FireFox. I have never seen anything like that before. Is it still the same when you remove the plugin?
++++++UPDATE++++ Thats actually a feature, in the seoquake cp It puts lines through " no follow links" Hmm....actually pretty neat It can be turned on or off as well Awesome feature actually , I would say a great way to look at directorys and such
You know for some really strange reason that plugin was the first thing that popped into my head when I seen those lines and I have no idea why. I have only used Seoquake once. Glad to see you found the cause