Gaming Call of Duty W@W

[Calafas]

So, i recently 'acquired' CoD W@W, and have been playing happily through it, and got to rank 50 or so online. Then all of a sudden today, it stopped letting me online on my profile, saying it couldnt connect to the servers. However, the weird thing is, on my friends profile, on the same disk, it lets me online, and i created a new profile, and indeed, it let that online aswell, but still wont let my first one online, for some reason?

Any ideas on what i can do except from..start again? :S