I wonder what FrodoFan35 wound up doing? For PPC Mac users, the keyboard now seems to be another, quite sharp nail in the coffin. I spilled a large quantity of water on my old aluminum keyboard recently and it couldn't recover. I put my respectable, but slightly rusty cast-off M7803 (Pro) back to work (photo isn't mine—I wish mine were this white!)…
…and implemented some credit card reward points to order a new aluminum keyboard. I was in a hurry and as Mom used to say, haste makes waste. I did notice some fine print to the effect of "requires OS 10.7 for full use of features" but had the "meh" reaction that I think any PPC Mac user can probably relate to. The product *looked* exactly the same, of course, and I didn't notice the model number change from /A to /B. You can imagine my disappointment on the third or fourth day of having this keyboard in action when I discovered the volume keys didn't work. The Spark program was mentioned here in Discussions as a workaround, but I don't like to be tricky with my precious Power Mac G5 at this point.
I decided to see if I could swap the MB110LL/B, which is engineered for Lion, for a MB110LL/A. What a depressing experience, not to mention the wasted time. I was not too happy with the treatment I got from Apple personnel on the phone related to this; in-store, where I took the /B to be sent back and credited to my card, was a bit better but still not up to past standards. More than one factor at work there, I think.
Best Buy and some Amazon partners supposedly have the /A boards, but I think I'm going to go the used-from-eBay route. I'm a true relic now… might as well act like one. 😉