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durga11
October 2nd, 2010, 04:39 AM
I am using ubuntu 9.10.While running a partial update through System->adminstration->update-manager. I am facing error as 'Error Authenticating some packages".

Please find the attached, screenshot of the error and sources.list file output.

Thanks
Durga

mrgs
October 2nd, 2010, 04:48 AM
Never do a partial upgrade:
http://ubuntuforums.org/showthread.php?t=1479146

They might leave the system in a state where a reinstall is the only way out.