If lately there has been talk of an increase in the number of objectives for all Games Live Arcade, apparently the achievements are not having an easy life in these last hours: a bug is striking, in various forms, most user profiles Xbox Live internationally and is by resetting all the goals to 0 or a few hundred points. In most cases, your gamerscore gets totally zeroed in General while others report that targets only pages disappear and then reappear individually once inserted various games in the console.

Microsoft is aware of the problem and are trying to discover the cause: it's a problem to the company's server or foreshadows a new Anonymous style attack?

Update # 1: It seems it is only a problem of synchronization and Microsoft has suggested through a tweet to disconnect and reconnect to Xbox Live.

Update # 2: Apparently the suggested resolution would seem to be not working for everyone. Some users suggest deleting your profile and make your gamertag recovery procedure to regain all its objectives.