Usually between 10 and 20 - Currently 12 with 5 stalled at 0KB/s (The number of simultaneous uploads drops off as more are stalled).

Most of the files I share are large (smallest upload at the moment is 70MB).

I always have a fairly high demand for upload slots (just short of 350,000 upload requests (upload count under stats) in the last 24 hours).

Mark