unable to update my software

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http://www.ubuntux.org – I am using KPackageKit to try and update all my software, my problem is I get the following error: Dependency Resolution Failed. A package dependency could not be found. More information is available in the detailed report. Details: The following packages block the installation: ppp libasound2 libglib2.0-0 isc-dhcp-client nautilus I believe the problem started a month or so ago when I was updating software and my laptop died in the middle of an update. I am using Ubuntu 10.04 LTS - the Lucid Lynx Any help would be appreciated, Thanks. (Distributions)