annual credit report says I have a morgage!?

This is the 2nd time I did an online report thing and it shows I have or had a morgage in 2000 (which I didn't). I used equifax and people search. How can I get more information on this, My ex and I were seperated at that time(2000) but still legally married till 2004. My Ex told me he only was renting, He had no money. Maybe he was lying? And my new BF said It wasn't him cuz I never signed any paper work for his house. Please help. I am going to send in all that paperwork to equifax to get my report but that will take a very long time for me to get the numerous copies they requested for security reasons.