I play this game a bit. I think it has some dodgy code to track your web usage to control the in-game advertising (sort of 3D billboards in some of the maps). You know the usual sort of crap you have to put up with these days!! I am sure you can block the specific port for sending this information were ever it goes!! (I found this out when googling for a fix for a map loading bug.) Just Google for the info.
I suppose thats why its a relatively cheap game... A good multi-player game though!! You get the usual aseholes who don't squad up and just mess about but hey-ho thats just life!! I do like the high-tech look after playing BF2 (EMP granades/bombs, floating mines and invisibility unlocks, etc.)!!