WP2BB posting on update

Hello,

I used wp2bb for quite some time now, and it was working flawlessly but now i changed my host and to start off it didnt work at all… now it’s working again but i have this problem that every time i update one of my posts it postes another topic on forums… ?? any idea what’s wrong or how i can change this so it only posts once uppon publish.

Thanks to all answers