Well, I can't figure how Daniel could possibly be super-sweet and nice 24/7. He's only human after all(hope it doesn't get back to him)...
Having said that there's a kind of a feud that's been going on for awhile between Erick Lindgren/Daniel Negreanu and Phil Gordon. I don't know if people in forums are making a bigger deal out of it than it is, but if you read what Daniel wrote about Phil, well, it makes it kind of understandable.
I don't have the link bookmarked but it was in Daniel's blog. He basically put down Phil and said Phil's not a real pro. It seems Erick must have said Phil didn't have much gamble, which then incited Phil to critique Erick's game, which then made Daniel feel like he had to protect his pal and before ya knew it, there was a Paris Hilton and Lindsay Lohan level feud going on.
It was a big dog fight(well if girl fights are cat fights than guy fights must be dog fights yeah?). Lots of "he said - he said" action. The fur was flying. Well as best the fur can fly when the fight's between guys who generally hide their emotions very well and so you can't really tell if they're fighting.
I for one am really glad Phil Gordon doesn't have red hair. You just know someone would have called him a fire-crotch and then it would gotten really ugly.