Your posts are green when you use IE and normal black when you use Firefox.
Mine are blue. They were green earlier, when I was using Firefox/Windows instead of Firefox/Linux (now).
Aha! When the green annoys me enough, I'll just run FR on Firefox instead. I was hoping it would make things move faster, too, but it didn't. It also seems to be threatening me with spelling corrections as I type, which is truly obnoxious.
I think it's my husband's new security software, determined to protect me from everything but catz on the keyboard. (And yes, you annoying computer, I'll spell it "catz" if I want to!)