I'm sure there are. It makes sense. The CI became too effective for them that it made a huge difference in their lives when it stopped working. If the CI truly sucked and didn't work at all, there wouldn't be people like that. That's why I'm saying people can't see CI as something to be totally dependent on, especially when there's an easy alternative solution.
I have days where I forgot to recharge my CI battery. When people come into my office to talk, I simply say "No CI today.". Then they act accordingly. My coworkers already know some signs. Plus we have an IM set in place for the whole office.