OS X :: Issue With Selecting Multiple Items In Finder List View

Maybe this was discussed elsewhere; if so, I couldn't find it:

Often I need to select multiple separate items from a large folder of them; I use list view, and command-click on each item, and then drag the whole batch to the appropriate location. It appears that in Snow Leopard (unlike previous OS X versions), when if I scroll down the list to select further items, it jumps back to the top-most selected item after a couple seconds. This makes it completely impossible to select further items! Is there a preference to turn this "function" off? Why would anyone want such a thing? Even if it is what the Finder is meant to do, it seems implemented poorly, since if I grab the scrollbar slider and drag it down below my selected items, after the couple seconds the view jumps back to the topmost item, but the slider doesn't move. All it all, it feels like a glitch.