This is a Comodo Dragon thing for most. They use their own secure servers and they are very tight. I learned about it when I got that message from one of Andyson's links. He's about as straight as it gets and in conversations with him about this I was directed to CD and those servers.
When CD installs it also changes connection stuff (keeping it simple.) You have to change it back and this article tells you how. Basically, CD inserted their own addresses into places where it used to be determined automatically, specifically TCP/IPv4 and v6.