Currently Being ModeratedFeb 1, 2013 11:51 AM (in response to alvazquez)
This SOUNDS like your "friends" (sic) computer has some third party software installed which has acquired the command-L as the locking shortcut. I would be looking to uninstall/deactivate this, or at least change its keyboard shortcut.
I'd be looking in the Applications or Utilities folder and/or System Preferences.
Currently Being ModeratedFeb 1, 2013 11:47 AM (in response to alvazquez)
Never heard of whatever it is you're talking about.