The Gnutella network is slow. Transfering a large file (50mb and up) can take hours. I suggest breaking files up into manageable sections, maybe 10mb each, that can be transfered a few at a time. True this could lead to 20 or 30 pieces to get but then, both the sharer and sharee wouldn't need to stay online for hours. Also, there seems to be few that support transfer resume so this way, a file at 90% after 4 hours won't start over at 0% if theres a break in connection.