The best way to make sure servers have the correct time set on their system clock, is to use NTP to synchronize the clock to an external time source. I always use pool.ntp.org as the external source, as this represents a pool of servers who are willing to provide the service. All sorts of things [...]

I wanted to find out if my CPU was 64 bit capable. It was a few years old, so probably not, but I figured I should be able to get linux to tell me without having to lookup the hardware spec of the box and then check the Intel website.
First I checked the cpuinfo data [...]

If using the net install ISO for CentOS, you will get so far and then be asked what FTP address to use for the installer to fetch the rest of the source material from.
For the FTP server, you can enter: mirrors.kernel.org
For the path: /centos/5.2/os/i386
If that doesn’t work for you (and it should), then there is [...]