In this case, I should do some major researching on the Internet and find ways on how to clean my Mac instantly. Unless I get out of this mess, I need to find something that will solve everything efficiently. But this proves out to be fruitless for my Mac still performed poorly. They should be manually removed so that my Mac runs in smooth condition. There are still a few hidden data and applications inside my Mac that is still hogging the disk space. It can never be the final solution to delete a couple of applications and software to free up disk space and widen its memory when the Mac is slow. Getting frustrated with my Mac which is getting slower and slower, I have decided I must do something to change the situation. For most users, the most noticeable changes are: the disk space that the operating system frees up after a clean install compared to Mac OS X 10.6 Leopard, a more responsive Finder rewritten in Cocoa, faster Time Machine backups, more reliable and user friendly disk ejects, a more powerful version of the Preview application, as well as a faster Safari web browser.
Rather than delivering big changes to the appearance and end user functionality like the previous releases of Mac OS X, Snow Leopard focuses on 'under the hood' changes, increasing the performance, efficiency, and stability of the operating system. Mac OS X v10.7 'Snow Leopard' was released on August 28, 2009.