It seems like THE NOISE-EFFECT IS OUT OF LINE WITH THE SCOREBOARD.
This only happens when the scoreboard is displayed and its very annyoing to see those things flashing...Some screens:


I have two Nvidia 580 GTX in Sli with the latest 275.33 WHQL drivers. Previously i was using 270.61 WHQL ones, and never noticed that issue...Could it be the drivers?
Let me know if anyone knows something.
Thanks