Mac App Store cannot update itunes, OS and remote desktop; keep saying it is updated and yet ask it ask you to update as in fact it is not updated

I search my problem on web and got no solution.

1) mac app store shows some updates needed. e.g. itunes, remote desktop.

2) I clicked "update", and it changes to "installed" within seconds and then shows I have installed the update.

3) But the problem is that the software is NOT updated and the "installed icon" changes back to "update" immediately.

4) the picture below shows what happened.

5) As you can see, the remote desktop is updated twice on Mar 3 and is version 3.8.2 v1.1 but the mac app store prompt me to update it.

6) I cannot update the new version of MAC OS too.

Solution:

1) Restart app or OS. >> Failed.

2) Rebuild spotlight >> Failed.

3) Genius bar >> No hope as the Genius bar is fully booked all the time (rumors that people are selling the timeslots, guess where am I?).

Can any one help me on that.

Thanks a lot.