Hmm, you guys brought up some points I hadn't thought of. It was an older lady, I suspect she uses the senior center herself, so she didn't particularly worry me. The bread is from the local grocery stores-they are wrapped in plastic with bar codes and labels. I hadn't even thought to be concerned about eating it. And yeah, it was strange that she said she knew I lived alone. It was a very quick encounter, probably happened in under a minute. I don't know which senior center, there are several in this city although I did try to do a quick search to see if I could figure out what this was about. I didn't get anywhere, but I also didn't try very hard. I'll do another search. Oh, and if anyone tries to claim payment from me, they're just going to get an "I don't think so" and possibly a call to the police if they persist. I didn't order it, so will not be paying for it!