Problem with keyboard

when typing the keyboard sometimes repeats keys.
I also tried to channge (note the error in the previous word) the keyboard setup (repetition speed and initial delay) but it dooesn't (note again) affect the problem.
is someone of you aware of some other setup I can operate?
has someone of you had the same problem?
thank you in advannce (here it is the problem again)
ciao
andrea

I have studied this problem now extensively and found the following:
1) The problem is not in my iMac only but exists also in other iMacs. I tested several of them on display at one Finnish Apple reseller and found machines the problem was even worse. Therefore, the Apple keyboard replacement does not help.
2) The problem is related to key response and individual typing style.
3) Every key has a mass and a return spring. Therefore, a key is a vibrating system unless there is enough damping to kill the vibrations. Apparently Apple keyboard keys can vibrate 2..3 times with certain typing styles causing several characters to appear on the screen with one LIGHT hit on the key.
4) Therefore, this problem could be solved if Apple (or clever hackers anywhere by using the Terminal) would write a code which would install a few millisecond delay until a new hit on the same key is accepted. There is a maximum rate humans can repeatedly hit one key, say every 0.1 second or 100 milliseconds. The possible vibrations are much faster and therefore a delay of, say 50 milliseconds, would effectively kill the effects of any vibrations but would not affect the typing in anyway.
5) This problem is a bug in Apple products and should be fixed with a Keyboard software update.
6) The problem can be solved by purchasing a Mac compatible Logitech keyboard. I tested several of them and none had the problem described here. Apparently Logitech keyboards have a different key response and damping characteristics and the problem does not appear.

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