Actually the speed you are getting is very fast. Satellite is usually under 700K download, like DSL speed. You have nothing to worry about. You are actually in the same speed league as most Cable Internet Users.
You aren't up to speed with the big boys just yet, but you're making progress.
::: Download Stats :::
Connection is: 4405 Kbps about 4.4 Mbps (tested with 1496 KB)
Download Speed is: 538 kB/sec
Auth Code: 2066076 (validate at
http://www.testmy.net)
Bottom Line: 79 times faster than 56K you can download 1MB in 1.9 second(s)
Validation Link ::
http://testmy.net/cgi-bin/auth_check.cgi?ta=&top=&align=&num=2066076&Kbps=4405&gen=gen&a=10.8571428571429&b=1.14285714285714&c=1145.14285714286 