how do i stop outlook auto adding entries to contacts

[Blobtastic]

My Outlook 2003 adds every address I send an email to to my contacts, which
is really annoying and means that I now have thousands of unwanted contacts.
As far as I am aware I do not deliberately have an 'Add-in' that is doing
this, but don't know how to check for that either! Any ideas how to stop
outlook doing this, as I can't find any help on the matter, or any obvious
way to turn it off.
The problem is duplicated as well, because if I email John Smith, for
instance, it adds two contacts, one for Smith, John, and one just for Smith.
Any help or advice gratefully received,
Blobtastic

 

[Russ Valentine]

Outlook does not and cannot do this. It creates an entry in your
autocompletion cache, but it does not create an entry in any Contacts
Folder.

 

[Russ Valentine [MVP-Outlook]]

BTW, in Outlook 2003 you check for Add-ins here: Tools > Options > Other >
Advanced Options...> Add-in Manager or COM Add-ins