Flash Detection not working on Safari


I am publishing a swf movie and an html file from Flash, with the Detect Flash Version checked, and when tested it works fine on Firefox, but it does not work on Safari (Mac OS X 10.5) The weird thing is that other websites like adobe.com or kirupa.com show their flash movies fine, which makes me think that it is a problem with the Detection.

Could you please help me figuring this out?