QUOTE(NineLime @ Mar 14 2009, 09:03 PM)
I'm pretty sure its one map pack per xbox live account.
I found this to be untrue by accident just yesterday.. I myself have 3 xbox 360's and paid for the map pack legit on all 3 consoles.. But yesterday i decided to make a new account on the 30 day trial to test the new god mode mod and i spg'd my new account with my original account to get all the perks after level 4 and low and behold to my surprise the map pack worked on my new account.
Oh and btw my new account is stored on a 512 mb memory card with no mappack stored on it.