i cant use ubuntu software manager

Posted by hossein on Ask Ubuntu See other posts from Ask Ubuntu or by hossein
Published on 2012-10-21T16:46:50Z Indexed on 2012/10/21 17:19 UTC
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software-center

It's the first time that I use ubuntu and I can't use the ubuntu software manager, when I type update codes in terminal it shows this error

Reading package lists... Error!
W: GPG error: http://ir.archive.ubuntu.com precise Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <[email protected]>
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/ir.archive.ubuntu.com_ubuntu_dists_precise_main_binary-i386_Packages
E: The package lists or status file could not be parsed or opened.

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i cant use ubuntu software manager - Developer IT

i cant use ubuntu software manager

software-center

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