Ubuntu/Debian extremely high network latency

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http://ubuntuforums.org – Hi, For the last several releases (and 13.04 is no exception) I get random and often high network latency on all Ubuntu/Debian based OSes (like Mint) - be it Firefox slow to resolve an address, or "apt-get update" slow to resolve archive.ubuntu.com, sometimes it even fails to resolve a domain. With non-Debian/Ubuntu based distros (e.g. Fedora) on same computer I don't have this problem. The interesting thing is - Chrome doesn't seem to suffer from this annoying issue, I heard Chrome ships with its own tcp or http stack, so could it be that Ubuntu/Debian mangles the http/tcp stack w (Hardware)