Windows 7: Why does my Browse For Folder's Libraries appear rearranged???

Hi! As you can see from the screenshot in the link below, I'm wondering why my Libraries in the "Browse For Folders" window appear to be rearranged.
As I remembered before, I think Documents should be first rather than Music. I just wanna know what caused this and how do I change it back.

Here is the screenshot:
http://sdrv.ms/VhvCSk


Thank You!

Personally ..... I have no idea what caused it. Have you re-booted? Ran a sfc /scannow? Is it serious enough for you to do a system restore?

Yes. I have tried rebooting and running sfc /scannow on my command prompt as administrator, however it did not fix a thing...
I have used system restore to the nearest restore point, but it didn't seem to fix the problem...

And I don't think using system restore further will fix this problem...

Any more ideas?

If I were u, I will not consider to change the order, for it doesn't really infect on using. Or may be you can't change the order since you did the reboot job.

Do you at least have any idea why this is happening? I just wanna know what's the cause.