google maps and ultimate facebook conflict - black lines

So, I recently switched to the wpmu dev premium google maps plugin, and I found that Im getting these crazy black lines on my map.
I think this is a conflict with the wpmu ultimate facebook plugin for the reason that, on the odd occasion, the map also replaces the 'facebook like box widget' in my sidebar with another instance of the map. so if they are both on the same page, the map eats the facebook widget (funnily enuf), sometimes..
take a look here
and another map here