20 seconds? I take it you dont download much then

on 30mbit I have certianly downloaded enough to think 'that could be faster'. But it is fast enough that isnt a major issue now, on 5mbit adsl things could take many hours to download.

Its worth noting as well multitasking gets a significant boost.

an example is if I streamed iplayer on adsl the latency would be up in the 100s for the duration, on my 30mbit cable connection it doesnt budge meaning things I do alongside wouldnt be affected performance wise.