Firefox-3.0.4 has got a problem talking to Linux

[Jim]

FC10/KDE

FireFox has trouble of connecting to websites , rpmfusion.org, lxer.com, 
linuxtoday.com,  "Firefox can't find the Server at www.rpmfusion.org"  , 
and the same with the other two Websites.

It can connect to fox.com, redhat.com, and yahoo.com without any problems.

This is a FIrefox problem I'm having on two computers, a eeePC laptop 
and a PC box.

I installed Opera on both computers and I'm not having any problems of 
finding any websites