User blog:IPod achievements/Achievements bug (?)

As my user-name already says, I am playing in order to collect all iPhone/iPod Achievements.

And I had them ALL - I swear! :-)

Now I changed from user 1 to user 2, and when I changed back to user 1, all recently acquired achievements were gone. x-( x-( x-(

When I change user now, I come into a screen, I have never seen before (see picture). If I am not mistaken, then all the new achievements from the last update are gone (appear as not earned)

I am wondering what kind of bug this is.

Has anybody experienced the same?