Rails core - Aug 2006 - association.count SQL ignoring :include

Using edge rails:

class User < ActiveRecord::Base
    has_many :locker_items
end

class LockerItem < ActiveRecord::Base
  belongs_to :user
  belongs_to :item
end

class Item < ActiveRecord::Base; end

user = User.find(1)

user.locker_items.count(:include => :item)
=> SELECT count(*) AS count_all FROM locker_items WHERE 
(locker_items.user_id = 1)

LockerItem.count(:include => :item, :conditions => ["user_id =
?", user.id])
=> SELECT count(DISTINCT locker_items.id) AS count_all FROM locker_items 
LEFT OUTER JOIN items ON items.id = locker_items.item_id WHERE (user_id=1)

These two queries should be identical, but the first seems to be 
ignoring the :include.
Something must have changed recently as it did work previously. I''ll 
look into it further, but can''t dedicate any time to it this evening - 
hence the email!

Thanks.