There was a minor one at least once before--I want to say back when they published a story (perhaps Ian's?) with Muslim characters. It was probably in the days of the Helix newsgroup which of course was deleted in a fit of pique (we were TALKING ABOUT THEM) so there is no proof of any of that bad behavior. I think at the time the sheetheads wasn't the point of the slapfight, it was just background noise.

Incidentally, it took him two days to find that you'd posted about it, but now he's confused as to why you hate him. ( http://webnews.sff.net/read?cmd=read&artid=%3C496598d5.0@news.sff.net%3E ) Nick apparently is jealous that Helix is so much cooler than Clarkesworld, but he never did anything to you, so why do you hate him so?