I did computer support and had a couple of title companies all though the 2007 boom and 2008 crash. I may seem impossible, and yet suits brining up chain of title going back into the 1800s do happen more commonly than one would think.

In the rural south there are some insane claims of title across families. I've seen title work where they had thousands of pages of paperwork involved with hundreds of possible heirs that had to be located.

Same thought. You'd think title insurance would only kick in if the last title transfer predates say 1980, or some other relatively-likely-to-have-county-digital-records date