On one occasion she locked up the entire machine. I don't know what combination of keys to press that would achieve that. Today, she locked up Firefox. I have no idea how to do that either.
What other sysadmin stunts have people's pets performed?
Top Ten Things Overheard At The ANSI C Draft Committee Meetings: (7) Well, it's an excellent idea, but it would make the compilers too hard to write.