Keyboard problem on Mac Mini

I got my MacMini back from repair, and then I experienced this problem: everytime I rebooted my machine,I got this "Keyboard Setup Assistant" popped up and asked me to reconfirm my keyboard.  Turns out it was because of a bluetooth detection.  Turning it off and that message goes away.

More detail in here.

Also it took longer to boot up the MacMini.  I guess it mostly because of the fact that now it has 8Gb of memory, and the bootup memory test sequence from the bios takes more time to check all the memories.