What are the default permissions on the Applications folder in OS X supposed to be?

Question

I was trying to run VirtualBox on OS X when I got the error:

Failed to open a session for the virtual machine tinyXP.
Failed to load VMMR0.r0 (VERR_SUPLIB_WORLD_WRITABLE).
Unknown error creating VM (VERR_SUPLIB_WORLD_WRITABLE).

According to this article http://www.virtualbox.org/ticket/8410, it is because the permissions on my /Applications folder are too broad. I checked, and I was actually very surprised to learn that the folder was in fact world-readable / world-writable.

drwxrwxrwx+ 164 root  admin      5576 Jun 26 22:27 Applications

So before I go changing them, I'm wondering if that is normal or if somehow they got changed?