Mac and the OS X are very stable and reliable. However, if you want your Mac to work perfectly you have to maintain it properly. Most of the errors and glitches that happen to your mac are caused by incorrect permissions table. Mac OS X as a UNIX based system has a UNIX way of handling the files. UNIX as a multi-user system has a special way of manipulating file access. (More about file permissions you can read here). When the new software is installed on your Mac or you did some other system tweaks, it’s very likely that permissions will mess itself up so you wont be able executing applications or it may happen that your mac is acting weird. The easiest way of fixing permissions is by using Mac OS X “Disk Utility” which can be found in /Applications/Utilities folder.
Fixing permissions is recommended before and after installing any software to your mac as well as installing any software updates. There are various software available on the Internet to help you keep your Mac maintained and in a “good health”. Software such as Onyx or Cocktail are doing a great job by not only repairing and verifying permissions for you but also cleaning the...