Life In 19x19

I only occasionally use Reddit so my question may be noob...

I write a message, press Comment and... nothing happens. I press Comment again being told I should wait 2s, doing it too often. Nothing happens. I reload the page. My comment has not appeared. What does this mean? A bug? My impatience not appeciating a too busy server?

I use reddit quite a bit, following many different pages. They do it to me sometimes too, especially I think after I post in certain pages. They try to keep you from spamming a bunch on reddit. It can be annoying though, when you think you are just being an active member in many different communitites.