Apple has released software updates to fix at least 21 security vulnerabilities in its Mac OS X operating system and other software for the Mac. The patches are available via Software Update or Apple Downloads. Seven of the updates included in this patch bundle fix flaws for the Mac version of Adobe’s Flash player, flaws that Adobe patched last month in two separate releases. No matter what OS platform you use, it’s important not only to keep Flash updated with the latest security protections, but also to only use Adobe’s site to grab those updates (for everything but Solaris, Flash 10,0,12,36 is the latest version). Bogus Flash updates are probably the single biggest vector for distributing malicious software in use today. So, when in doubt, keep this link handy: It will show you whether you are indeed running the most up-to-date version of Flash.