My delete key doesn't work at all

Since I got my new Macbook refurb 2 days ago, the delete key has intermittently failed. Right now it seems to be pretty much off.
Is there a utility I can use to see if it's firing events, and that therefore some piece of software is just swallowing the keypresses, or if the button is actually broken?
The button has normal action.

I've had the same problem. Whenever I turn on my MacBook Pro, or when I awaken it from sleep, if the computer is cool (i.e., hasn't been running recently), then both the Delete key and the right bracket key ( "]" ) don't work for a while. This may be 2- 3 minutes, possibly longer at times. During this time, the Keyboard Viewer does not indicate they are being pressed. Once the computer warms up, the problem goes away.
Note that I have an Apple Bluetooth keyboard, and it works all the time, so I don't think there is a software problem.
I called Applecare, and the person I spoke with had not heard of this problem. He suggested I reset the power management unit and the PRAM. The former is done by powering the computer off, disconnecting power, removing the battery and holding the power key down for at least 5 seconds. The latter is done by holding command-option-P-R when booting and waiting for the second chime before releasing the keys and letting the computer reboot.
Neither of these fixed the problem. I think it's a hardware problem, but if the Apple discussion groups are indicative of the frequency of occurence, it doesn't appear to happen very often.
My next step is to reconnect with AppleCare, who left the trouble ticket open for me. I wanted to post this so you could see that more than one person had the problem.

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