Seems I've started a holy war on Vista UAC. My original point was that I find it ironical that Trend Micro - a security company - tells me that to fix their particular problem I need to disable the basic Microsoft security feature in Vista (UAC). Furthermore for Trend Micro to say that I will not be compromising security in anyway by doing so is just stupid. I pay attention to the UAC prompts and it has protected me on more than one occasion. I do however agree with many other posts in this thread that the average user will just blindly click through the prompts and hence these people are probably better off disabling UAC.