Furry nuff, just from my experience of 512Kbps DSL, 1Mbps DSL and 4Mbps leased line as sole user on the network I rarely came across sites that gave used all available bandwidth at my end.
And almost never with my 10Mbps home connection now
But then, I suppose it's entirely possible that my browsing habits are atypical, I do tend to go for the very latest releases of software so I am probably contending with thousands of other users
Edit:
Oooh, nice find Moby, didn't know there were any home/SOHO routers with that level of functionality