I thought this was well known, and I think it only happens when someone tries to submit a comment, so the title is slightly misleading. There is a perceptible d

I thought this was well known, and I think it only happens when someone tries to submit a comment, so the title is slightly misleading. There is a perceptible delay while trying to submit after a day or so, but it seems to cache the result so it's faster if you comment again within the interval.