[ubuntu] skype installation problems

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http://ubuntuforums.org – while installing i get messaeges sudo apt-get update && sudo apt-get install skype "Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: skype : Depends: skype-bin but it is not installable E: Unable to correct problems, you have held broken packages." can any one help. iam using intel (Hardware)