Comment 2 for bug 828105

at-spi2-core is already a recommends of ubuntu-desktop, so it ought to be installed during dist-upgrade or with update-manager:

Package: at-spi2-core
Task: ubuntu-desktop, edubuntu-desktop

I can't find any reference to at-spi2-core in the attached upgrade logs, though. Michael, can you see anything in these logs why the new recommends don't get installed during the upgrade?