Originally Posted by
LordManhammer
From the 5.0 patch notes:
"• Drop rates have been changed across the board, especially in inferno zones. Uniques will not be as easy to obtain, this will help the new world drop vanilla uniques hold plenty of value. Player count will no longer increase the drop rate of puzzles, enchantments, cow / Azathoth organs, and boss exclusives. This is another change we are making to remove the advantage of loading several clients, and once again will greatly increase the value of items found from puzzle bosses."