I recall someone a couple of days ago saying they kept getting an error message about a problem sending mail - something to do with debug and bad order - but the posts were getting through anyway. I just got the same error message myself, and again when I tried a second time, and both copies of the post got through too. Didn't think to copy it though. If I get it again when I try and send this I will rectify that oversight.
Seems like the worst that will happen is it will cause people to make multiple copies of the same post if they aren't aware of the issue, but I just wanted to register that it is still a live issue and presumably indicates some small forum architectural thing needing attention.