I had a tech from an IT support company come over to check out our computers. I guess I should have watched what he did more closely. In addition to several other problems, I just noticed that my "Recent documents" settings got changed. It now only remembers 9 documents (which is the default, I think) and all of my "pinned" documents are no longer in the list.

Can anyone tell me what he might have done that caused that to change so I can call the company to complain?