Aaahhh... Bad idea.
Certificates are encrypted tokens of honesty and trust.
Yes, they are used for online shopping, but they are also used for many other things -- like "secure" websites that help stop nosy little beaurocrats/secret police/Homeland Defence from tracking what you look at, for example the secure version (http
s://) of Wikipedia. They are also used to validate software sites, especially for hotfixes and updates -- Microsoft and Mozilla both use this method.
The advantage of using certificates is that the process is completely "transparent" in the true sense of the word: you don't have to wrestle with complicated procedures, it's all done for you.
The system ain't perfect. Bt at the moment, it's the best we've got, and both sides of the system have a vested interest in keeping it good: the browser publishers (Gecko, Presto, Trident, Chome) who represent you the user on the one hand, and your clients on the other (banks, software publishers, Wikipedia etc).
By all means disable/delete DigiNotar, but that's as far as you need go. Needlessly tampering with certificates could mean you can't use various sites which you have never thought of as being "online shopping".
Gordon.
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Understanding the scope of the problem is the first step on the path to true panic. [Florence Ambrose, "Freefall" 01372 January 22, 2007
http://freefall.purrsia.com/ff1400/fv01372.htm]