When I am trying to make posts on the site (specifically PM's) the error message reads "you may not make a post so soon after your last one" or something. Normally I wouldn't complain since I can understand how it would preven spam, etc. But the thing is, it actually still sends the message. I first realized this when someone said that I sent them the same message twice.

Just thought I'd point this out, I don't know what the moderators/admins are going to do but I hope this fixed or influences something (or at least an explanation or something).

I run into that message all the time, but for the reason of having multiple PM-conversations at once. If you get that message when you mean to post once, check your outbox in a new window or tab. That should tell you if you sent it. If you meant to post multiple times, you have to wait.