Critical vulnerabilities have been identified in Adobe Flash Player that could allow an attacker to take control of the affected system. A malicious SWF must be loaded in Flash Player by the user for an attacker to exploit these potential vulnerabilities. Users are recommended to update to the most current version of Flash Player available for their platform.
To see what version of Macromedia Flash Player you have, go to this Adobe Flash Player page. Wait for the page to load. The version will be displayed in a box called "Version Information." If it says "You have version 9,0,47,0 installed" then you have the newest version.
Adobe recommends all Flash Player 220.127.116.11 and earlier upgrade to the new version, which can be downloaded from the Player Download Center.
Note: If you visit this page, you should uncheck the installation for the Google Toolbar!