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Leigh, We actually don't have anything to buy for the Mac. Malwarebytes Anti-Malware for Mac is a free product. If you purchased something from Malwarebytes, that must have been the Windows version of our software. Malwarebytes Anti-Malware (formerly AdwareMedic) is a simple and trustworthy Mac OS X application specially designed to help you scan your Mac for adware and help you get rid of it with ease. Effortlessly scan your system for adware and remove it with a mouse click.

The OS X Lion v10.7.5 Update is recommended for all OS X Lion users and includes general operating system fixes that improve the stability, compatibility, and security of your Mac. Updating your system You should back up your system before installation; you can use. Do not interrupt the installation process once you have started to update your system. You may experience unexpected results if you have third-party system software modifications installed, or if you've modified the operating system through other means. Choose Software Update from the Apple () menu to check for the latest Apple software via the Internet, including this update. Other software updates available for your computer may appear, which you should install.

Note that an update's size may vary from computer to computer when installed using Software Update. Also, some updates must be installed prior to others, so you should run Software Update until Software Updates states 'Your software is up to date'. You can manually the update installer. This is a useful option when you need to update multiple computers but only want to download the update once. These versions of the standalone installers are available from Apple Support Downloads.

The OS X Lion v10.7.5 update includes, a security feature which helps you keep your Mac safe from malicious software. Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. Risks are inherent in the use of the Internet. For additional information. Other company and product names may be trademarks of their respective owners.