Could u add this to the program

i was wondering if u could add a feature in the download window that would stop the downloads with out killing them like a puase. because right now in OS X if i need to restat the computer for some reason i have to force quit limewire to quit the program and that is the only way i dont losse everything in the que. if u could add this feature i woulld love it. you make a great program. thanks