Sometime today, something occurred with my machine where the caps lock key is now mapped to Shift. It's annoying as I need to use Caps Lock for, among other things, a spreadsheet that I'm working on (not to mention CRUISE CONTROL, etc).
The only remotely plausible cause for this is the following registry entry, located at the following location:
The key is as follows:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout] "Scancode Map"=hex:00,00,00,00,00,00,00,00,02,00,00,00,2a,00,3a,00,00,00,00,00
I don't have anything like AutoHotKey or such installed, and I didn't get a new keyboard, or change my keymapping. I lock my PC while it's unattended, and I run the domain here, so it's not someone else messing with my stuff.