Hey Mario,
if you look at components/com_hotspots/views/hotspots/tmpl/default.php around line 34 we have this:
// Load google maps
$doc = & JFactory::getDocument();
$gmapsapi = 'http://maps.google.com/maps/api/js?sensor=true';
$doc->addScript($gmapsapi);
As you can see we are specifying the sensor parameter.
Look at the source code of your page with rokbooster on and off.
When it is on is the url to google maps changed? Maybe there is an option in rokbooster to modify urls? I haven't been able to test the extension yet.
Regards,
Daniel