But gonna ask it anyway Sure I already know the answer but can't remember it, and someone at work asked me and I forgot

I have 512k ADSL (pal at work has 10mb - wanker )

So how comes in downloads I seem to be capped at 60kbps? Not just bit-torrent or P2P downloads, even downloading from Microsoft's website (forexample)

I had my guy at work on the phone the other day asking me to talk him through setting up some PC security, so we were on line (me at home, him at home) and both downloaded the AVG set up exe (I wanted to make sure it was the right one)

I was getting 56-61kbps - he was getting well over 500kbps! WTF is that all about?

How is download speed calculated? If I go to a speed test website, they all tell me I am doing between 500 and 600k.....