Unable to use Speed test

For about a week I have not been able to connect to the Speed Test. I get the message:
Firefox can't establish a connection to the server at speedtest1.adslguide.org.uk:81.

The only changes I have made to my system recently has been to:
1. remove Avira Anti virus and go back to Avast.
2. Updated Java ( and re-installed in case that was the cause)

I use Comodo Firewall and cannot see that this is blocking the test.
Any advice greatly appreciated.

http://www.thinkbroadband.com/speedtest.html

The speedtester connects to TCP port 8095. Please ensure this port isn't blocked in firewalls. Using the port 80 option may help work around port based firewall problems.

Edited by billford (Tue 15-Jul-08 21:35:38)

We use TCP Port 81 for the basic connection, and then once connected give you a choice of using TCP port 8095 or port 80 for the actual test.

It looks like your firewalls are blocking access on port 81 if you goto http://speedtest1.adslguide.org.uk:81/ you should get a blank HTML page, if your browser refuses to go there then its time to find out how to allow connections on port 81

In reply to:

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We use TCP Port 81 for the basic connection

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I didn't know that, thanks Andrew.

In reply to:

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It looks like your firewalls are blocking access on port 81 if you goto http://speedtest1.adslguide.org.uk:81/ you should get a blank HTML page, if your browser refuses to go there then its time to find out how to allow connections on port 81

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You were right Andrew, it looks like Comodo threw a hissy fit and blocked the speed test.

I un-installed Comodo, scrubbed the Registry and re-installed. Bingo! The speed test now works.
Thanks for the help. ;-)