Ugur,
One of the security enhancements of E-Smith is that is NO compiler. Why? Well it goes something like this. If a cracker could break into your site the next logical step would be to use your computer for bad things, very bad things. Well, Linux is not like Microsoft. Programs must be custom made for most types of OS types/computer types. Yes, you can load a setup file, called an RPM in Linux, that is not processor specific (noarch), but most are OS/version specific. So the cracker would have to find an RPM install for the custom e-smith/RedHat install. Copy it to your machine and install it. E-Smith has a small enough install base that most bad programs will NOT be packaged into an RPM to abuse these systems.
Also it keeps newbies like me from messing up the system from the inside. This way I cannot install any old program that is full of security holes. The people who write RPM's for E-Smith are usually compentent and are (mostly) modifying already secure add-ons.
Hope this helps