Forticlient and igmpv2 storm- please help!

I have forticlient 5.2.5 installed on a student laptop.  When forticleint is on it causes an igmpv2 flood.  I am seeing it with wireshark.  I turn the client off on the laptop and the flood goes away.  has anyone had any problems and solutions or causes for this?  It also looks like when I unregister the Client from the ip of my fortigate the storm goes away.  Any thoughts?

thanks

E