I know next to nothing about how internet speed is calculated, but right now we're paying for ATT DSL with a 1.5 mbps tag. When I go to my router summary, it says "incoming: 1534 kbps, outgoing 384 kbps," which lines up with the 1.5 mbps ATT advertised. But I only get 150 kb/s download speed, 160 kb/s tops. Is this how it's supposed to work? OS X 10.5.8, 2Wire router, ATT "1.5 mbps" DSL.