This is not a bug.
This message appears when you try to install a package that has already been
installed. This is a good message- not a bad one.
Thank you for reporting and making ubuntu better.
** Changed in: lucene2 (Ubuntu)
Status: New => Invalid
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package liblucene2-java 2.4.0+ds1
** Attachment added: "Dependencies.txt"
http://launchpadlibrarian.net/24697339/Dependencies.txt
** Attachment added: "DpkgTerminalLog.txt"
http://launchpadlibrarian.net/24697344/DpkgTerminalLog.txt
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package liblucene2-java 2.4.0+ds1-5ubuntu1 failed to install/upgrade: package
liblucene