Are you reporting that:
a) 30% of your panoramas and synths don't load at all
b) that when you load a panorama, like the one above, that about 30% of that panorama doesn't load?
I ask because I just loaded your above panorama, looked in all directions and it all seemed to load for me.
Are you still having the problem?
If you are, what are you using to view the pano with?
a) The Silverlight viewer? (If so, which browser and operating system are you using?)
b) The Windows Phone or iOS app?
c) The HTML5 panorama viewer in Mobile Internet Explorer 10, Metro Internet Explorer 10, or Mobile Safari?
Let's figure this out.
Your fellow panner and synther,