The wretched Mac keyboards used in my office are subtly different from the regular PC ones. SO subtly different I didn't notice precisely what it was for over a month and was wondering if I was losing the ability to fast type.
Everytime I placed my hands on the keyboard without looking, I'd type complete and utter gibbyerish. Then I'd stare at my hands bewilderedly and wonder WHY this was happening. I look carefully at the keyboard, and it's a QWERTY board, no reason for this. So I align my hands meticulously and type flawlessly. And then the next time I take my hands off the keyboard and replace them without the meticulous alignment.... gibberish happens again.
Then today I discovered THE TRUTH.
Regular PC keyboards have a raised line on the 'f' and 'j' keys on which you place your index fingers. I instinctively aling my index fingers with these lines.
Mac keyboards have the lines on the 'd' and 'k' keys.
%#@*%$&@^#!!!!!!