I just had this problem start - but I know why it's happening (at least for me).

I'm trying to get some tickets for February. When I originally priced them, they were in the 'U' fare class, which is what I need to get 100% EQM on NW. But then when I went to buy them the next day, the fare dropped and they are now in 'W' class. I don't want that. So once a day I get on the website, price out the tix to see if the class has changed. If it hasn't, I still have to reserve them for another 24 hours. So I open a new CO.com window, sign-in and delete my current reservation that is on hold. Then I go back to the previous window and select the new itinerary (same flights) that I want to put on hold. When I select the itinerary, that's when I get the Country of Residence error. If I go back through the flight search tool, I can then reserve them again with no problems.

So with me, it's because I have one browser opened with the flight search (not logged in) and then I open a new browser and login with that one. CO.com has some cookies issues going on I believe.

Just wondering if the two of you that reported this problem might be doing the same thing?

-RM