VERY IMPORTANT: There have been recent reports of a potential Adobe Flash Player exploit in the wild. Anyone with a Flash Player version lower than 9.0.124.0 should download and install the latest Flash Player update. If you’re not sure which version you have, visit this page at Adobe’s website, and it will tell you: http://www.adobe.com/products/flash/about/

From what I understand, you can become a victim to this exploit if you have an unpatched version of Adobe Flash Player and download an exploited flash file, open an email containing a flash movie, share a flash file via instant messaging, or visit a website that just has an exploited flash movie on it (which is almost impossible to avoid), regardless of which browser you are using or which operating system you are running.

More information about this can be found at the following links:
http://blogs.adobe.com/psirt/2008/05/potential_flash_player_issue_u_1.html
http://www.symantec.com/norton/security_response/browsewebsafely.jsp

The update can be downloaded from Adobe’s website here:
http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash