Total failure on FMS port connectivity test?

Why does the FMS port connectivity test consistently report that every single port (RTMP and HTTP tunnelling) test failed? (The page even notes that all users should pass it!) I've updated the Flash Player, I've opened ports 80, 443 and 1935, and yet it still keeps failing. I'm using Vista Home Basic's firewall, but shouldn't allowing the ports in the Exeptions tab of the settings work?

I've tried googling for solutions, but to no avail. All I get is advice to open the ports (which I have, I've even tried switching them from TCP to UDP in a desperate attempt -- it did absolutely nothing) and update my Flash players (which I'd done before running the damn test).

My main browser is Firefox 3.0.10 (and yes, I've checked to see if I have multiple Flash installations in add-ons -- I don't), but the tests also fail in IE.

I'd be really grateful for any and all advice and help.

Message was edited by: Lyssa32 I should add that I have admin privileges on the computer. (And I'm on mobile broadband, not ADSL -- though that shouldn't affect the test outcome at all.)