I vaguely remember turning off some 3-letter acronym security "feature" after trying it out for a short period. Me and my computer couldn't be happier.
I never looked back... Just some common sense:
- Don't run executable from unknown sites
- Beware of Media Player dangerous codec downloading "feature"
- Don't open executable attachments, even from your friends
Seriously... When was the last time (if at all) that UAC caught something and alerted you of an imminent danger, which you cancelled the execution of?
PS... Not to say that this is OK for my dad... Probably 50% of his CPU cycles go towards security apps... Such a waste... Maybe when O/Ses grew up, we would have a better security model