Oil doesn't just dissappear. Not sure if you've taken it in to the dealer. If you haven't done so, do a THOROUGH inspection of your bike to find a leak. Sometimes it leaks where you wont even notice it. Place a piece of cardboard underneath to see you have any drops of oil.
Not buell related but one time my ducati started using a lot of oil. I figured out that I blew a some kind of gasket and my oil was going from my motor to my clutch where it just sat. Not sure how buells work but sounds like you're losing tons of oil. Are you sure you're just not slowly burnign it off? Do you have a warranty? You might have an internal problem.