I just started using a MacBook Pro in addition to my Windows 7 laptop (to see if the OS X 10.8 will be a good alternative for me). At Windows bootup, since my user is the only one on the computer, it is already selected at the login screen and I just type my password and go.
On OS X 10.8.2 it shows my name and a Guest account. I have to select my name with the mouse before I can type in my password. I can't even use the keyboard to tab over to my name:
How can I disable the Guest account from showing on the login screen so only my user is displayed with a password box?
Users & Groups the Guest user is disabled:
I also did some searching and found that this could be a side affect of the 'Find my Mac' feature of iCloud. I verified it is also disabled: