[ubuntu] Problem installing wine

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http://ubuntuforums.org – I am trying to install wine and it seems I have some mismatch. It was working before I re installed ubuntu 12.04 due to some other problems I was having. Maybe I am missing some repositories. Any suggestions? playonlinux: Depends: wine or wine-stable but it is not installable or wine-unstable but it is not installable Failed to fetch gzip:/var/lib/apt/lists/partial/pa.archive.ubuntu.com_ubuntu_dists_precise_univers e_binary-i386_Packages Hash Sum mismatch Some index files failed to download. They have been ignored, or old ones used instead. (Hardware)