Not sure why this happened, have a support request in. Sorry if this causes hassle to anyone. I post almost everything unlocked, so it shouldn't, but heaven knows what is going on.
[Edit: I am also still listed as being mutual friends with people on their info pages.]
[Edit2: And I've lifted a copy of my flist from my custom friends page]
[Edit3: Oh thank heavens, someone seems to have fixed it - now I shall wait and see if someone claims credit or just close the request without it]