As we said before, an OS takes time to mature. This is simply untrue. Linux system administrators must spend huge amounts of time understanding the latest Linux bugs and determining what to do about them. This is made complex due to the fact that there isn't a central location for security issues to be reported and fixed. True, there is not one central location for security issues, but this is actually an advantage of Linux, not a disadvantage.
Most distributions have a central location for all bug-fixes and errata.
Simply download the package updates and install them. It is very easy. If for example, you are running Red Hat 6.1, simply go to the Red Hat 6.1 Errata page , read about what is broken, download the rpms, and install them. It should also be noted that in the Linux world, fixes are made and posted at a blistering speed. Often within the same day that a bug or security hole is found, the patch is provided.