lib32jack0 is not an Ubuntu package. You need to remove it from your system in order to install the Ubuntu ia32-libs package.
** Changed in: ia32-libs (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/769763 Title: package ia32-libs 20090808ubuntu11.1 failed to install/upgrade: tentata sovrascrittura di "/usr/lib32/libjack.so.0" presente anche nel pacchetto lib32jack0 6:1.9.6~dfsg.1-3ubuntu2+fixes1~maverick2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ia32-libs/+bug/769763/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs