Using UTC in Windows can cause some problems
There's a fair amount of evidence to show that when you run Windows with UTC time, things get hairy:
Most people shouldn't get touched by this, but I know plenty of times I've been bugged (namely, every single debugger reads the BIOS clock and attempts to not de-botch itself) when using Windows with UTC time. In my experience, Windows 8 also will force BIOS time into being Un-DST adjusted Localtime. Dangerous!