Michael Abraham wrote:

> 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"]

The key itself may be worn. Try your valet key and/or a spare master key
if you have one to see if it does the same thing with those keys.