If only it was 100mbps.
Your results are about correct.
Here is my results using the Internode mirror, and the cable speed test (I have Internode 1500/256):
kbps: 1273.4
KB/s: 159.175
Mbps: 1.2435546875
Seems about right to me, my downloads max out at around 160kB\sec. Which mirror did you use, and which ISP are you with?