Unfortunatly, no.
No this was only a feature in modern warfare 1; there is a hack you can download to fix this though.
You leave it up to Infinity Ward.
Reinstall the game.
I do not know how to fix this but is it a BIG problem?
maybe it is your Internet connection if you have wireless get the modem.
Nope. bummer huh?? IGN's daily fix talks about it here: http://video.ign.com/dor/articles/965543/ign-daily-fix-/videos/thefix_spc_092809.html
Which heat shield? There are several.
Sometimes your local Library has a machine that cleans and polishes games DVDs and CDs that they lend and they will do this.
It happens to pc and ps3 ppm as far as I know. It happened to me while playing spec ops.
you get a new modern warfar you cant fix it
Modern Fix was created in 2000.
To fix a corrupted file in Modern Warfare 2 on PS3, first, try restarting your console and then relaunching the game. If the issue persists, you can attempt to restore the file by going to the Game Data Utility on your PS3, deleting the game's data (not the save data), and then reinstalling the game. If the problem continues, consider checking for any available game updates or clearing your system's cache.