Here they come again

Universal Studios are at it again, this time going after YouTube and MySpace over what Universal believe is infringement of copyright in the use of these sites. I read this, in Melbourne's Age newspaper this morning and it reminded me of a speech by Lawrence Lessig on this very topic. I wonder where this will end up? Obviously everyone should have the right to protect what is theirs, but should we be looking more deeply into this - is this copyright infringement, or is this anti-competitive behaviour? This raises the question that has been won, and lost, before - is there infringement of copyright, in a tool that enables copyright to be infringed?