Completelt agree Drunk Monk. It irritates me too. I don't understand that sort of support, and how some can be so damn negative - but it genuinely is how they support the team. I have season tickets with a group of English guys (who I suspect some of the pod were talking about) and occasionally stand with them for a game or two a season. Some of them were saying "why are they cheering that rubbish?" On the weekend, in the same way a lot of the others say "why are they booing?"
Obviously these two types of support clash, and I've heard criticism from both sides of the fence about the other group, which is really annoying to me (and quite awkward because I have mates in both groups). Each side just needs to understand that it's how the other chooses to support the team - even if you don't understand or like it.
Same applies for people leaving early, you think it's important to stay until the bitter end of a game - good for you. My Dad chose to leave 5mins early on the weekend because he decided he'd rather catch the 905pm train rather wait an hour for the next one for the sake of watching us play poorly for another 5mins. So calls for those people as being "lesser fans" etc really annoys me too. People can leave whenever they want, for whatever reason they choose.
Looking down on other fans just because they don't support the team in the exact same way you do is just snobbery, plain and simple.
On another note, what I find interesting is that we've played far worse in the past, yet this is the first time I can remember that any sort of significant booing has happened. Is it as a result of higher expectations this season as a whole not being met?