Is there a difference between the Speed Test (dual column graphic) and the Broadband Speed Test (dashboard graphic)? The Speed Test won’t run for me. It say "Connection refused: connect" when I click the start button. My browser is Firefox, my ISP is Comcast, and I connect using a wireless connection through a Trendnet USB adapter and Linksys WRT54g router.
Let me know if you need any other information. Thank you.

Yes, there is a difference and the dual column graphic speed test is hit extremely hard (and also the most accurate) which is why you are receiving the message.
All I can say is to try it later – there is only so much bandwidth.
The other tests not as popular (yet) and so chances are you won’t recieve such a message.
Best regards,
Jim.