[ubuntu] Why can't my coputer connect to sf.net?

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http://ubuntuforums.org – Thank you forum for checking this thread out. I'm sure there's other questions like this out there, and the answer is so obvious that I'll feel like a total dork when it's solved. I am trying to connect to Sourceforge.net or sf.net, but I keep getting network timed out error. I can't even use the terminal to sudo apt-get anything that uses sf.net too. I tried actually installing a windows partition and I still get a no go on it. Tried to google the question, but found no solution. All I could think of is checking my router again, but I don't know what's going on. (HowTos)