Mac users running the old version, Mac OS X 10.5 (Leopard) will not continue to get security and stability updates starting from Chrome 22 according to the Google Chrome Support website. However, users with Chrome already installed will continue to use the browser, but subsequent updates will not be effected, whilst users without Chrome will not be able to download and install the browser.

The newer versions, Mac OS X 10.6 ( Snow Leopard) or 10.7 (Lion) are fully supported by Chrome, so users are advised to upgrade, as even Apple has discontinued support for the older Mac OS X version.

Google Chrome has remained the top browser for those who consider internet security paramount in their online transactions given its innovative sandbox technology.

The more reason for the discontinuation of support for the older Mac version hinges on security concerns.

Mac OS X has been the target of recent botnet attacks making the company revert from its old stance that the platform is impregnable to malware threats.