The 3 tests (above) that I just ran were using a Flash
based test tool. The flash content is compressible and I am getting intermittent
messages that the content in test is get compressed to provide the perception of more
bandwidth.

My original test in my last post was
using a Java based test
tool. The Java tool is nice because it's payload is hard to compress so it presents
a good view of the performance.

http://www.dslreports.com/speedtest