I think against Sheffield Wednesday he was awful, but having said that in the other games (Milwall, Preston and Reading) he has been ok - getting 2 assists in those games too.
The problem is that he is naturally quite defensive, especially at his age where you won't see him bombing forward much. Because of his nature, I don't think he really suits our current style, whereas Phillips does; because he is much more aggressive in attack. In other words, I think he'd be better suited in a Pulis-style team where there's less intent for him to go forward.
I actually think all things considered he's been ok - for a free agent from the MLS at 35 he's not done badly bar the Wednesday game. I imagine he will stay until Sako is fit who will then replace him and he will probably go in January.
But overall I think he's done a job given the circumstances, anyway it would be moronic to boo him - we've had worse than him over the years.