Just updated to Safari 5 yesterday and realized after testing that some changes in the way Safari 5 handles JavaScript have caused krpano viewer to stop working properly.
Tested with two different projects: both work well in Opera and Firefox but fullscreen mode isn't working anymore in updated Safari 5.
Hopefully this problem will be fixed soon as Apple has started to roll out Safari 5 update to everyone out there and that will cause problems to users of krpano.