"Posted too quickly" -- glitch?

[Renato]

I posted an update to my own post shortly (about a minute) after the original and I got this message "This reply has not been added as it has been posted too quickly". I didn't use to get that before. This is probably not worth fretting about... but.. there you have it.

[azrael]

Due to spamming, we increased the timespan between posts/edits for flood control.