I have three external hard drives; all of them Time Machine backups and encrypted. When plugging in and mounting two of these three hard drives, the unlock dialog comes up and I'm able to unlock them, no problem. However, the third one isn't working properly. The unlock dialog comes up, I type in the password, and then the entire dialog just greys out then eventually disappears, and the HD never mounts to the desktop. I know it's not the password, because if it was the password, it'd shake the dialog. When opening Disk Utility while this HD is plugged in, DU never loads but instead, has a spinning gear and a message saying: "Loading disks." I restarted and tried to boot from that HD. Surprisingly, it works, but DU does the same thing when opening it from "OS X Utilities." Very odd situation and I'm not sure what to do. Any thoughts? Thanks!