This happens when two packages with the same version number are not equal. Apt does not support packages with the same version nubmer that are different .
** Changed in: apt (Ubuntu) Status: Unconfirmed => Confirmed ** Summary changed: - APT shows same-version packages as upgradable + APT shows same-version packages as upgradable when the packages are the same version but are different (e.g. one from debian, one from ubuntu) -- APT shows same-version packages as upgradable when the packages are the same version but are different (e.g. one from debian, one from ubuntu) https://launchpad.net/bugs/87114 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs