In Mexico, the only times that they have gone thru my bags is in customs. That was right in front of me. I travel to Mexico 3 times a year and always use a TSA lock and it has never been cut. I have used the plastic ties before I got my new (over 3 years old now) luggage and started to leave a note and a spare tie just in case they went thru my bag it could be secured again. Honestly, I would secure any bag I travel with using any means I am comfortable with and hope for the best.
Well, nothing was stolen. At least I have figured out anything that was missing. I guess I need to buy some TSA locks...... It was a direct Airtran flight. They said they would send me $25 coupons for both of us. I was more concerned that they figure out where it happened.