[ubuntu] odd IP addresses

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http://ubuntuforums.org – Should I be worryed or really worryed? Cause I'm not that worryed... Just wondering if I should be. So I was just stairing at the System Monitor on my desktop, when I noticed alot of trafic when there should only be the "stay alive" packets (I think thats what they are called), so I googled something like "data analyzer" and got nast. I ran it and found that I was communicating with several different IP addresses. Needless to say I got a little worryed. I'm no expert but when you randomly pick an IP addr and whois says: Service name :KORNET Organization Name (Hardware)