Same, Safari in 10.5 --- Javascripters have to deal with graceful degredation / progressive enhancement, why not Flash?
It's not always possible in Flash, as SWFs published for newer players are sometimes completely incompatible with older versions of the player - usually it's done with JS on the page it's embedded on.
Besides, this is just an experiment - I bet you don't see those canvas demos taking these things into account!
This is one more reason that flash is bad. Adobe makes truly terrible software. Sure, it makes pretty images and stuff, but it's horribly written and architected.
Working fine on Debian Lenny 64bits with 32bits shockwave flash 10 r15.