I don’t have any statistics on this, but most of the laptops that cross my desk have one thing in common: pressing the power button puts them to sleep (i.e. standby mode) instead of actually shutting ...

My (slightly old) Toshiba Satellite has the Fn key placed between left Ctrl & Alt, where a Windows key would normally be. The Fn key is used in key combinations to control video out, lock the laptop, ...