1. Your question is not related to the OP's question. You should have made a new thread, but only after searching the forums, Wiki, and FAQ for your answer.
2. There is a natural discrepancy between your client's ("downloader's") stats and the site's stats due to a time delay of up to about 15 min for your stats to update, so you may notice a difference if you are seeding at a fairly high speed. Otherwise, it is largely due to some data loss that seems to be fairly common.
3. Your ratio shows up as infinite (sideways 8 ) if it is greater than 1000 or if you have 0 downloaded data recorded. It is also always green and small and so it is sometimes hard to see.