If you use Jetpack 2.0.4 together with my plugin Leaflet Maps Marker (v3.2.4 - http://downloads.wordpress.org/plugin/leaflet-maps-marker.3.2.4.zip), my maps get broken after the first connect to the wordpress account within Jetpack.
I dont know what exactly happens within Jetpack, just as I look into the html source afterwards, I see the output of my global $lmmjs_out variable duplicated or sometimes even more often available. If I disconnect from WordPress account, output is normal again.
I will implement a workaround for 3.2.5 but hope that someone from Automatic can take a look into this and see whats going on here. I´d be glad to help of course.