First I need to log in to launchpad. That's weird, since when do I need to log in simply to view bugs? But after logging in I see this:
Not allowed here
Sorry, you don't have permission to access this page.
You are logged in as Floris Bruynooghe.
Since when is Ubuntu hiding bugs? Sure security bugs might need to be hidden for a while but you could be more descriptive about that. And surely you shouldn't be linking to such bugs?