So when I got my MacPro this spring, it came with one of the new aluminum flat keyboards. I have a good wireless keyboard that I've always liked, and I didn't want to switch, so I just left the MP kb in the box. Well the wireless one went out and I pulled out my still-in-the-wrapper aluminum keyboard to use it. I quickly discovered that my 'a' and 'caps-lock' keys didn't work unless I pushed down on them so hard i was worried I would break the plastic of they keys. All the other keys work fine. So I took it to the Apple store and showed them and they went to the shelf and opened up a retail packaged kb and swapped mine out for that one. no receipt, no hassles, just a nice easy swap of defective hardware. Well, I'm typing on that replacement keyboard right now and guess what? My right arrow key doesn't work the first time I push it. I have to push it twice to make it work. The first time is like a practice push, and then every one after that in quick succession will work. Doesn't matter if I hold it down or not, the first keystroke will not register. Not with a shift modifier, not ever. The left arrow works fine, as do the rest of the keys, as far as I can tell. So i hit the arrow key and nothing happens. If I hit it again, it responds, and it will keep on responding as long as I keep hitting it (or holding it down), but then if I use some other part of the keyboard, it will "reset" the unresponsive behavior. I looked around online for any indication that this is normal and all i could find is a bunch of posts about leopard and laptop keyboards not working. I don't think this is related. Let me be clear, my other, broken keyboard wouldn't respond no matter how many times you pushed the letter 'a' unless you really really forced it down into the metal. This one will respond to the slightest touch, but only on the second and consecutive presses... This can be very, very annoying when you're selecting blocks of text and using a lot of keyboard shortcuts. mouse-based text selection is rarely accurate enough for the kind of work I do. My work-around has been to try and go from right to left instead of left to right to avoid having the use the right arrow key, but it's pretty frustrating. Does this sound like ANOTHER physically defective keyboard? what are the odds of that? Is there some sort of apple support document I could look at, or a software update that wouldn't come through the regular software update utility? thanks.