Slow keyboard input in fields - first characters transposed

Question

Any application or web page that I am in that has some kind of input field is giving me a problem with now. If I go into the field and immediately start to type it's like the iMac gets startled, that first character needs a second or so before it figures out I want to enter something and it then accepts the second character and displays that BEFORE then applying the first character.
This topic is a good example, when typing in the Subject above it displayed as *lSow keyboard* so as usual I have to correct it. This happens on every new input field.
What can possible be causing this?

Answer 1

Is it just input or is the system otherwise performing slowly? You can do a SMC reset and than frequently resolves performance issues. You don't mention which iMac you have or what keyboard you are using, this could be useful information. To do a SMC reset please carefully follow these instructions:
*SMC RESET*
• Shut down the computer.
• Unplug the computer's power cord _and all peripherals._
• Press and hold the power button for 5 seconds.
• Release the power button.
• Attach the computers power cable.
• Press the power button to turn on the computer.
*PRAM RESET*
• Shut down the computer.
• Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
• Turn on the computer.
• Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
• Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Roger