The numbers outside of the parenthesis (sp?) is who you are connected to. When you are seeding, you will not connect to any Seeds, so that should be 0. However, to upload/seed you need to connect to someone in Peers section. It looks like you are not connected to anyone there either, but there is two people trying to connect to you. This is where forwarding your ports comes into play (www.portforward.com)
The 1:1 ratio is download:upload.
Obviously you can only download 1, but you can upload an infinite amount.
Probably when you just finished, your ratio was below 1:1, possibly a 0.35 or something. That means you shared back 35% of what you took. If you keep seeding, you will see that number go up. And eventually you will hit 1.000 That means you have shared 1:1.
After that, the ratio (assuming you keep the upload going) will reach numbers like 1.250, 1.500, 2.000, etc etc.
The 2.000 would be like a 1:2, or that you shared back twice what you took. Which is a good thing.