Why Are Canadian Sympatico Users Being Banned On EFNet?

An anonymous reader asks: "After being away from IRC for over a year, changing ISPs and moving my physical self to another apartment, tonight I tried to get back on EFnet. With a brand new IP, and a brand new computer, I discovered that all over EFnet, all channels related to Linux are banning all Canadian Sympatico users, this includes high speed customers, dial up users, and business users. In fact, the ban is quite severe and bans the entire sympatico.ca domain. I've tried to message several operators in #linux, #linuxhelp, and #slackware, but nobody is responding. What's going on?"