Hello. I've found reference to this same issue on the internet in a couple places, but nothing about how to resolve it. All references to the issue are three years old. I have an iMac running Yosemite. I turned on FileVault the other day and everything is great... Except when it comes time to login to the computer. The password box gets auto populated with keys without me touching it. I click cancel to type and it starts filling in over and over and over again without me doing anything. It's like it's haunted. Anyhow, Usually it takes a couple reboots to where I can jump in and get the password in. Not sure what is up with this. I assume it's a bluetooth error, but who knows. Anybody know how to fix this? It's making me crazy.