I'm facing a strange problem. When I type ⌘+C with the left command key, it does not work anymore. The left command key is working for ⌘+V or ⌘+X or any others so it's not a hardware problem.
The C key is working too. The right command key is working for ⌘+C.
I tried changing keyboard language, adding a shortcut, reset NVRAM, activated/deactivated VoiceOver (tip found on a site) to no avail. I'm on a MacBook Pro with Mavericks.