When security experts get together with lawyers we end up with security features that shield software publishers from liabilities and don't do anything to improve security - just think of all the overly complicated, impossible-to-remember passwords forced upon us, with passwords end up written on the post-it note stuck to your monitor. So much for security. The same thing is Vista's User Account Control. UAC pops up so many security warning that after just one day of using Vista I stopped reading them altogether. After one more day of playing whack-a-security-warning, I decided that time is right to turn User Account Control off for good.
To turn UAC off start with launching Control Panel: Start -> Control Panel, and then type "turn user" in the search box and then click the "Turn User Account Control (UAC) on or off" link:
Then UAC screen will appear. Just clear the check box and hit OK button. Vista will probably require rebooting.
Once you have rebooted, your life will be back to normal, except the nagging red shield icon in the icon tray reminding you are truly extreme person living on the edge.