My Apple Remote was not working with my iMac which is running 10.7.4.
When I attempted to pair the remote to the computer, by holding down the menu and the next track buttons, the following symbol appears in the center of my screen.
After resetting the SMC, the Apple remote is working as usual. In particular, holding down the menu and the next track buttons displays the "linked chain" icon, indicating that the remote has been paired to the computer.
But I am still curious, what does the image mean?