There is a danger of reading too much into it but even the end seemed a bit weird when Van Persie just stood in the middle of the pitch. http://arsenalist.com/video/?id=xnx16l
The boos were certainly for the sub, not Arshavin personally. Although yes I can see how it could've been seen that way and that Arshavin may have felt dead inside after.
We as fans have been extremely patient, so frankly I don't care if Wenger, Arshavin, Henry or anyone else at the club feels the fans aren't pulling their weight. We see the same shit over and over, it's like every season is a repeat of the last.
They were booing as soon as they saw Ox walking off. When Ox name was announced they cheered, then went back to booing. Arsahvin didn't do anything wrong in the previous game to get such a reaction. He's had a worst run of games in the past and it has never resulted in sucha reaction. It's shame he had to the player to come on for Ox, but if Yossi came on, there would have been boos as well. Ox just set up the goal and was having a great game. As soon as he sets up a goal he goes off. That was why the reaction was so strong.
Actually, I don't think Arshavin was booed at all - it was the substitution. I'm still scratching my balls head at the decision to take Oxo off.