Writing less than 15 characters in a comment triggers the 30 second protection.
I notice a change has been made to how long comments can be. Again.
I used to just pad out my comments to 15 chars with spaces, and when the new limit was introduced, I then padded it out to 15 characters with spaces and then put a full stop on the end (period for those in NA).
Now when I do that it seems to disallow this. Ok fine. But when I fixed it to actually make it 15 characters for real, it told me I couldn't post a comment for 25 seconds and the counter was reset.
The counter should not be reset unless the comment was actually posted. Now I have to wait 25 seconds just to see if my new format has been accepted (well actually more like 90 seconds cos I keep hitting the button at about 23 seconds because I'm impatient)