Problem with Keyboard function keys.

Hey guys, let me start by saying I'm not a novice when it comes to computers, I'll be able to understand most of what you guys say here. My function keys are working perfectly fine... when I hold fn with F10 or any other button with controls it will move the desktop away in a quick and timely manner. However, if I try to use the key with just the speaker function it does not respond until MUCH later if at all.
I have been having numerous headaches with Lion. This issue did not arise previously with Snow Leopard. Keyboard Setup Assistant also appears at bootup although I have nothing plugged in what-so-ever. Couple of things I've tried (I've found many threads about this and this seems to be the answer that is commonly given, but doesn't work for most of these people):
1) I reset my PRAM a few times.
2) I tried it with the Use function keys button checked and unchecked. This is happening straight from a fresh install.
3) I deleted preferences and had them remade.
This goes for Brightness, Keyboard Brightness, Dashboard, volume and track controls. Thanks for your help...

Without knowing which verison of OS X is installed it's difficult to say what you have done. However in ML open System Preferences - Keyboard - uncheck Use all F1, F2 etc. keys as standard function keys

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Running the application in debug mode proved that the problem is not in FunctionKeyHandlerImpl.handleKeyCode and the function key was doing well but the results were not reflecting in the table. Setting the partialSubmit of the button to true and adding the id of button to the partial triggers of the table solved the problem.
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i face a problem with my n81 2 gb.
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