somthing i stumbled on when updated my vid card drivers

[R KELLY]

i bought the radeon 9800 pro in april 2003. i updated the drivers in august. directly after i updated the drivers i played some planetside. when i got to an enemy base i could see through the walls but only at a distance. when i noticed that i was like what the hell WTF happened. it was like i had a cheat even though i dont cheat PS because of the GMs(game masters) that are in the game. can any body tell me is this a driver glitch or a ps glitch with the vid card drivers.