Adobe Systems Inc. today issued a security update to its Flash player to plug at least a dozen security holes in the software, including some that hackers have been using in to break into vulnerable systems. The latest update brings Flash player to version 10.0.32.18. Updates are available for most Flash installations on Windows, Mac and Linux machines. To find out what version of Flash you have, visit this page. Adobe recommends users of Adobe AIR version 1.5.1 and earlier versions update to Adobe AIR 1.5.2 Bear in mind that depending on the number of Web browsers you use, you may need to install this update more than once. For example, Windows users who use both Internet Explorer and Firefox will need to visit the Flash download page with each browser. The IE update requires the installation of an ActiveX control, while the Firefox update page asks you to download