You and all the other Apple haters are funny, you dredge up old, discredited claims and present them as gospel to try and justify your dodgy broken down pc.
I am a professional technician I have repaired PC's and some Apple PC's. What I said about parts is true. Dell, Apple, HP and any other PC maker you can think of selects their electrical parts from the same manufacturers' parts list as anybody else . Except for the
few propritary parts they install. Most of Apple's propritory parts are to make sure they are not fully compatable with a standard clone PC thus, they cripple a good computer so they can sell their software. So far they are the only company who has done this that has survived. I would guess that Apple in the future will continue to get more like a PC or they will not survive.
I don't say things I can't backup, and all you have to do to do to prove my case on the parts is to open the case and look at the chips. You will find only 3 or 4 that say Apple on them the rest will be; Texas Instruments, National, AMD, Intel, Siemens, Samsung, Toshiba and an innumerable host of others. In fact if you look closely you will even find that Apples propriatary chips are made for Apple by people like AMD, Texis Insturments, Intel, Cisco, or any number of Chinese, Indonesian, Tiawan, Korean or other manufactur Apple also does not manufactur their own drives. If you look closely you will see that they are relabeled from manufacturs such as Western Digital, Maxtor, Panasonic, Toshiba, Seagate, HP, Sony, Phillips,
Mitsubishi, or somebody else. Apple makes nothing! They have their cases, their boards, their propritary parts made by some contract manufactur. They have a factory where they do their final assembly and testing but that's it.
The only thing that makes an Apple unique is the service level they choose to provide, their case and their boards and software thats all. All of the pc manufacturers have most of that in common with Apple. Even their boards are made by a contractor every one does that. Board shops are special technology. Few can make 6-8 layer boards.
An Apple is Just a circumcised PC.
As for the security updates Apple describes as, "critical" you can find Security Update 2007-004, at
About Security Update 2007-004
So if you haven't heard Apple has security updates to.