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Disable the Caps Lock key
Incorrect Password — to avoid very confusing login errors with passwords, etc, disable the caps-lock key. An 'A' is not the same as 'a' for a password, except perhaps on sites with poorly-designed security.
Disabling the caps lock key also keeps you from “shouting” in email and similar— a breach of online etiquette that tags you as a newbie, or as obnoxious.
And bottom line, it’s a nuisance key that gets hit by mistake too often on Apple’s current keyboard.