I think you got segfaults because you hit bug #2027941 (or #2041831, the "secret" report, dunno which one should be made duplicate). I guess you used a mouse click to deselect :) If you use the spacebar to deselect, you can probably reproduce this bug.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2068805 Title: "Install Now" button disappears for good if all packages unselected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/2068805/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
