I recently had my IMac w/dual Intel processors upgraded to 3 gig ram & 1 terabyte hard disc. My Trash has 300+ items in it. When I attempt to empty the trash, it starts to review 20,000+ items. I have stopped the emptying process because I don't want it to dump those 20,000+ items.
Well those 300+ items may contains zip files, applications etc. Take a look in your trash and make sure there's nothing you need in there then empty it. (The window title should have a trashcan and Trash written on top)