I don't believe you. I updated from Flash Player yesterday (or was it two days ago?) from 9.0 r115 to 9.0 r124. According to Adobe, Flash Player 9.0.124 was released on April 8, 2008 and it was fixing security vulnerabilities in Flash Player 9.0.115. I have been using Firefox 3 RC 1 since it was released. I don't know if Firefox 3 RC 1 detects and disables the vulnerable Flash Player version today but from 2008-04-08 to 2008-05-28 seems like more than 24 hours to me.