Today Apple released an update for the Aluminum Keyboards that ship with most of their desktop systems. This update applies to both wired and wireless keyboards. Here's the information that Apple gives us:
This firmware update addresses an issue with the aluminum Apple Keyboard and the aluminum Apple Wireless Keyboard where a key may repeat unexpectedly while typing. The update also addresses other issues. Mac OS X 10.5.2 is required before installing this update.
Please note that as a firmware update, you must download the installer (either by downloading from Apple's website or by opening Software Update). Once the download has succeeded, you will be able to open the installer in the Utilities folder (~/Applications/Utilities/ )
Thanks to everyone who sent this in!