OK now I just put Norton Firewall on my computer just for fun and I turned off ALL access ... yet people are downloading files from my computer.

What gives?

FYI, MY COPIED/PASTED BASICS:
(1) I have an eMac running OS X 10.2.3.
(2) I have two firewalls I play around with out of boredom: the OS X built-in firewall and Norton Personal Firewall 1.0.2.
(3) I use LimeWire 4.0.7.
(4) I will get LimeWire Pro when I have some cash. I believe in supporting LimeWire and carrying my own weight.
(5) I got cable internet just days ago. Before that I downloaded nothing but 120 KB pictures from my favorite movie fan-sites.
(6) I'm very new to all this and I know I'm ignorant. Hopefully this is temporary. If you would like to make fun of me that's totally cool, but please be constructive and don't think you're not shooting fish in a barrel.
(7) I may or may not know enough terminology at this early stage to search these forums effectively. I ask questions only after making a sincere effort to find answers beforehand. If I'm asking a question that insults you, I will be neither hurt nor offended if you point this out. I would LIKE you to point this out. Just don't mistake stupidity and lack of common sense for laziness.