A pretty old but great article about UAC (User Account Control). It explains how this feature of Windows 7 & Windows Vista really works, its benefits and why you should never turn it off.
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If UAC is set to notify me before changes are made to my computer, why not always sign on as administrator?
Who says you should not sign on as administrator? The only message in this article is: keep UAC turned on. It will save you lots of trouble.
One of the worst features of Windows7 and Vista.
Its like encasing your house in concrete to stop thieves… I would rather run the ‘risk’ than go through the hassle. As the hassle of an attack would be far less than the continual griefing that windows gives you.