A few years ago I bought a 91 Accord that did the same thing I finally went
and had a new key cut at a Honda dealership and it worked like magic. Not
sure if this will work in your case but it might be worth a try.

"Michael Abraham" <m.abrahamx@rogers.com> wrote in message
news:LPqdnfvNY9H2wRrenZ2dnUVZ_v6dnZ2d@rogers.com.. .
> In my 1990 Honda Accord EX R holds on to the key after turning the engine
> off. Sometimes it releases it after a minute. Sometimes it retains it
> until the next day. Sometimes not. My mechanic took the ignition apart,
> lubricated parts, but it made no difference. It's quite annoying.
>
> [to reply privately, remove the"x"]
>