I have also been experiencing anomolies with flash embedded in quicktime files...specifically import a quicktime movie into flash 4, extend out your timeline to allow all the video to appear....now make a new layer and place a transparent instance of a button somewhere over the video...assign this an action to jump to a new url. Publish this out as a quicktime movie so that the flash layer is transparent above the quicktime layer. This works fine in the player but occasionally crashes....now try pulling it up off a server using netscape 4.6 or above on the mac (with quicktime 4.1.1 or 4.1.2 plugin) using http streaming...try to start clicking in the button area as its loading and it will definitely crash netscape and kill the sound manager on your mac....ie 4.5 is just as basd, ie 5 is actually a bit better only crashing occassionally. I have replicated this on several machines running 9.0, 9.04, netscape 4.6, 4.72, ie 4.5, ie 5.0 quicktime 4.1, 4.1.1 and 4.1.2 trying to eliminate this problem..any one who has any tips on this please please post it here! Thanks!