if i connect to a network drive (in this case, an external hd hooked up to a pc) on my mbp, and then add a new file to the external hd through the pc, my mac does not see the new file unless i eject the network drive and reconnect. is there any way to auto-refresh the network drive, so that whenever a new file is placed on it, the mac recognizes and displays the change? or, is there any way to manually refresh? ejecting and reconnecting is a bit of a pain. thanks.