Thanks for your bugreport.
Could you please attach the file: /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_precise_main_binary-i386_Package ?
What version of ubuntu/update-manager/apt are you using currenly?
Thanks for your bugreport.
Could you please attach the file: apt/lists/ us.archive. ubuntu. com_ubuntu_ dists_precise_ main_binary- i386_Package ?
/var/lib/
What version of ubuntu/ update- manager/ apt are you using currenly?