> Put simply: the problem isn't positive attitude. It's positive attitude that is in direct conflict with reality.

I disagree that an attitude in conflict with reality is a problem, not for those that have it. If you haven't seen it already you wouldn't believe just how long a company or group within a company can muddle on without any grasp on reality whatsoever. Of course you are better off leaving while the termite-eaten building hasn't collapsed yet, but in this recession that is easier said than done.