MyBB Community Forums

I just converted from phpbb to mybb and everything went fine but the threads that came with links instead of appearing as:
www.yahoo.com

they appear as:

<!-- m --><a class="postlink" href="http://www.megaupload.com/?d=15LSFUV4">http://www.megaupload.com/?d=15LSFUV4</a><!-- m -->
<!-- m --><a class="postlink" href="http://www.megaupload.com/?d=1NWEI89R">http://www.megaupload.com/?d=1NWEI89R</a><!-- m -->
<!-- m --><a class="postlink" href="http://www.megaupload.com/?d=2C9F2QVR">http://www.megaupload.com/?d=2C9F2QVR</a><!-- m -->
<!-- m --><a class="postlink" href="http://www.megaupload.com/?d=2ET94346">http://www.megaupload.com/?d=2ET94346</a><!-- m -->
<!-- m --><a class="postlink" href="http://www.megaupload.com/?d=2KHLRB7H">http://www.megaupload.com/?d=2KHLRB7H</a><!-- m -->

how could i fix this? please help