When you go into the connections tab, does it have you listed as an Ultrapeer? Normally you are not connected to more than 5 people at once...if you are an ultrapeer, it will consume more of your bandwidth, and I believe that you will see less uploads. Forgive me if the older version that you use works differently. There should be an option to disable ultrapeer capabilities.

Good Luck

Dano

P.S. You have 6 upload slots and 1,000 files per person...the 'files per person' refers to the number of files someone can download from you at one time