An AIP Supplement was released that describes a potentially dangerous error on the latest version of the Toronto VNC.

Great care is taken to ensure accurate geographical representation of aeronautical information on these charts. The 25th edition of AIR5000 Toronto VNC (dated June 2007) encountered a registration issue during printing. Although not all charts are affected, there is a potential that all aeronautical features on the north side of the chart shifted during the printing process and pilots should be reminded to use this specific chart with caution.

When the new VNCs are released you can exchange your defective one for a new one at the point of sale.