I know this prob .. I am host sometimes .. and when I am host on snd .. every1 get 9999999999 score -.- I got an infection .. and after one on the other team has got a kill .. he auto times .. bet thats something u do too..
there are 2 options to get this away
first: Go to prestige shop and buy double xp ( if you don't have tokens download my trainer and give yourself the tokens )
second: if you are infected go to your mw 3 folder player2 folder and delete the config_mp.cfg
/moved to help section
I love it when people keep their agreements /sarcasm ftw