Is your apple display an actual Cinema display or one of the newer Thunderbolt displays?<p>I&#x27;ve noticed some issues with the USB hub that is built into the Thunderbolt display whereby for some reason it doesn&#x27;t enumerate correctly every 40 - 50 plug&#x2F;unplug cycles while using my MBPr at work. It only happens when the Apple keyboard is plugged into the display, with alternate keyboards it doesn&#x27;t happen.<p>So I personally feel like it is an issue with the Apple keyboard.