Cannot download folders via gnutella network. Thus, the file you must be downloading is a torrent file. Unfortunately LW's torrent abilities are limited. LW does not keep track of share ratio & some people using proper torrent programs might filter out those who do not have a share ratio above a certain amount for example. There might be 2,000 people with same torrent file, but depends on whether they have free upload slots & enough upload bandwidth left over to share to you.

As for folder size, generally with torrents the size is reserved on your hard disk drive as soon as you start to download the torrent. This also usually happens with video files on the gnutella network.