I tested it three times and got three very different results:
233 Kbps
478 Kbps
826 Kbps
Now, that is quite a difference in results. Mcaffee is totally smoking dope saying that it is around 1500, which is just wrong.
Either the tests are not accurate at all, or satellite is very flaky with speed (or it is a combination of both). I would say that is typically runs somewhere between the two lowest numbers, which still blows away dial-up, so I really don't care 