>So this means that LW will not completely shut down whenever you have incomplete downloads??? Is the background process an option?.... or will we need to kill the incomplete download before shutdown to ensure the background process doesn't run

Nope -- the search will actually work just like any other search. The nice new thing is that you _can_ re-complete incomplete downloads. I think the word 'background' was meant in terms of allowing you to resume multiple incompleted searchs at once. Once you shut down LimeWire, all stuff will definitely stop though.