However, a blog posted on the website of Adobe.com, by Wendy Poland, Security Response Program Manager at Adobe Systems said that this update included an earlier version of Adobe Flash Player (version 10.0.45.2) than available from Adobe.com.

The website added, “While the Mac OS X v10.6.4 update does not appear to downgrade users who have already upgraded to Adobe Flash Player 10.1, Adobe recommends the users to verify that they are using the latest, most secure version of Flash Player (10.1.53.64).”

Adobe recommended that users of Mac OS X v10.6.4 to verify Adobe Flash Player version number installed on their systems, after applying the Mac OS X security update. Then access the About Flash Player page or right-click on content running in Flash Player and select an option 'About Adobe Flash Player' from the menu. Users of multiple browsers need to perform the check for each browser installed on the system.