At least some Apple Stores are no longer buying more stock of MacBook Pros, in what is most likely a run-up to an imminent hardware refresh, sources indicate. A worker at one store comments that the shop's inventory manager has simply been barred from ordering more Pros, even though there are currently no more units to sell. A staffer at a second outlet says that his/her store has completely run out of 13- and 17-inch systems, while a person at a third shop mentions that all three models are in extremely low quantities there.