Sounds like
Learning difficulties or something, aye.
I get a guy in regular as clockwork on a saturday afternoon. Obvious learning difficulties and he always comes to me.
He's a bit younger than your description, but otherwise a fair match; late thirties or so, always has an odd smiling expression and drags on the end of words as if afraid to let go.

It's always the same thing. He's changed the settings on his six-year old nokia and would like someone to show him how to make the clock display in 24-hour format again. Or take the phone off silent, or something.

If i'm not busy then I take five and show him how to change whichever particular setting it is, he thanks me and off he trots. I'll see him again in a week, give or take an hour.
(Sundayturkey has the biggest mug of tea, Sat 6 Sep 2008, 0:00, Reply)