Although Compression is a very important method of making your pages lighter and easier for users to download, it’s definitely going to cost you more CPU and on high load servers it’s not recommended unless you already know how to cache your HTML pages.
There not much performance difference between MYSQL 4 and 5 as far as you’re not using mysqli ext for your PHP scripts, but it nice to find rpms ready on Centos.org which makes the job much easier.
It is annoying how most installed programs set them selves in windows startup which you can then manually remove through
Startmenu -> run -> msconfig -> uncheck uneeded programs or services (services could be set to start manually better than disabling it and has the same effect)
but then we need to start some favorite programs that we use often, that could be done as following