@roger,
Me too, glad that is. I've had it go to as long as fifteen, by my timing instincts, which are pretty good (to date) but I thought it was because I had clicked edit and gotten to it in time, and once doing that, had some thinking/fixing leeway.
I know I've edited after someone has responded, as my posts suffer from strange grammaritis due to a mix of fast typing and often failed editing, but I suppose that has been within the five minutes range.
edit (ha) - Robert's timing makes good sense.