I noticed if someone goes to international checkout, even though I only accept orders from Canada, all the countries show up in the drop down menu. Is this supposed to be this way? Is there anyway to show only Canada?

I had noticed this a few months ago. I called support and was told that they will all show on the address page of the checkout but it tells there is no shipping options for this address on the shipping page. He said that they can't change it.
I hope in v7 they fix it so that when you select to ship to specific countries, that you will only get the option of those countries on the shipto/billto page of the checkout.
It is frustrating because we see checkouts everyday that are not completed, because they have a shipping address in Russia, China, etc. If they didn't get the option on the first page, then they would stop there and not try to come back with 25 different countries just to see if they could sneak an order through.

Thanks Pro, I had a feeling it wasn't an option.
That would be a nice feature for the new cart.