In my last entry of my blog, some panoramas shows ok, some shows flat (no "surround" effect when you zoom in) and one of then doesn't shows at all, it appear the "Buffering" label and the increasing "%" but when it raise to the 100% it shows only the black rectangule and thats all.
What's the problem? It's a "new embed code" issue or what? I try to render the ICE panoramas from the begining several times and get no solution.
For the "flat" panoramas, you can use ICE's projection menu (the rightmost on the File menu bar) to force cylindrical projection. By default ICE will use perspective for field of views < 90 degrees, like on your first and fourth panoramas.
For the sixth panorama, HD View has a bug. You can work around it as above by choosing a cylindrical projection.