Canada Post is a crown corporation, and being a crown corporation it has the same obligations as any other crown corporation. VIA Rail and CBC have the same kind of framework. The solvency issue is the responsibility of all crown corporations.
What makes it so huge, I'd say, is the number. It's a huge institution, and we all know we live longer than we used to, so it really adds up.
The second thing is that the interest rate has brought the solvency to a higher level.