Multiple announcements being generated

Community Explorer

Hi everyone

I have an issue that seems unique to one course.  Each weekend I generate an announcement for each of my subjects that includes links to Team meetings etc.  This is working fine for every course except for one.  This course seems to generate multiple copies of the announcement (see image attachment).  This obviously frustrates students as they receive multiple emails and it is clogging up my announcements.  I am not sure why it is doing this - the announcement is not set on a delay etc and I have turned off commenting.  Anyone seen anything like this - is there something really silly I am doing?