Connection Reset in Firefox but not other browsers

[holomorph]

I've tried this on two different computers, one at home, one at work, both running Fiesty. When I try to visit http://www.mdsplus.org/ in firefox I get a connection reset error page :

The connection was reset The connection to the server was reset while the page was loading. * The site could be temporarily unavailable or too busy. Try again in a few moments. * If you are unable to load any pages, check your computer's network connection. * If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

But, using other computers here at work, which run windows or gentoo and firefox, they have no problem accessing the site. Also, if I use a different browser (eg dillo) I also have no problem reaching the site from my Ubuntu box. So it's something specific to the way firefox in Fiesty is configured, but I don't know what the problem could be. Any ideas?

- Bjørn