It seems that strange issue of having all the weapon unlocks many of us where having yesterday in BF2 was in fact some idiots hacking the system.

Here's their explanation.

Well, what a wonderful few days it has been. Since EA didn't take the time to respond (or maybe even read) our emails about various stats-server security holes, it clearly showed us how much they care. Therefore, we came to the conclusion that modifying 5 million accounts wouldn't be that big of a deal.

And the response.

In the future, if you really are concerned about "exposing security holes" to EA (which I sincerely doubt) rather than grandstanding, please e-mail me personally since it appears that you don't have the correct contact info. I will PM you the address.

All of the changes made will be rolled back in the next couple hours. Users may have to rechoose any unlocks they would have legitimately made in the last day or so as a result of the roll-back, but no stats should be lost.

Thanks Bluesnews