HTTP Error 403 - Forbidden

This morning after creating "nenenebooboo", I kept getting this message when I tried to republish my posting! At first, the status page told me to wait 10 mins before republishing. After more than half an hour, it was still telling me to wait 10 mins! So the 10 mins became several hours! Kept telling me that there's error!! Sigh, I surrender! This is what happens if you are "computer-illiterate".
Was wondering if it's due to something I did to the blog last night. Hmmm.. I wonder what went wrong >:(