Comment 3 for bug 542892

Testing with the current release of software-center, 1.1.23, the result when executing the steps in the description above has changed a bit. Specifically, the "Update Now" button is now hidden, but the "To show information about this item, the software catalogue needs updating." message still remains. So, the issue with pressing "Update Now" is no longer relevant, however, the user is still faced with a somewhat perplexing experience since it's not obvious what should be done.

Note, however, that after navigating back to the "Fonts" list view the "ttf-mscorefonts-installer" package is no longer included in the list, and so the details page for "ttf-mscorefonts-installer" is no longer reachable via the UI from that point.