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I've not been able to reproduce this issue using the most recent packages in 11.04. I notice that you have a package called 'libaio' installed at an older version - however its not present in the 11.04 archive. My guess is that this older version is not multiarch enabled so is conflicting with libaio-dev. Please can you switch to using the libaio1 and try again -you will probably need to remove libaio first. Please update this bug report if this resolves your issue. Marking importance as 'Low' and status 'Incomplete' pending your response. ** Changed in: libaio (Ubuntu) Status: New => Incomplete ** Changed in: libaio (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/837482 Title: package libaio-dev (not installed) failed to install/upgrade: tentative de remplacement de « /usr/include/libaio.h », qui appartient aussi au paquet libaio:i386 0.3.104-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libaio/+bug/837482/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs