Norton Labs have created a utility that removes a lot the UAC annoyances you may be experiencing in Windows Vista. It allows you to configure a list of applications that can be launched in admin mode without incurring a UAC prompt, basically a “do not ask me again” dialog. Great for everyday applications like Visual Studio.
May be a better solution than disabling it completely ;)
There is one caveat though, it will send information to Norton whenever you get a prompt. It will send the filename and hash of the files involved, as well as your response. The intention is to create a white list that will be shipped with the finished product.
There is a free beta version and a FAQ available at Norton Labs, both X86 and X64 editions.