For the past few days, I've had a new icon on the logon screen. Apart from my admin account, I now have an account labeled "other user", with just a frame and no user icon. What could be causing this, and how can I get rid of it?
The Other User is an option for you to login as another account. If you have any other accounts installed in the system other than the main user, you will have that. If you use the built-in Administrator account, the Other User will show up. The only way to get rid of it is to disable any accounts other than your main account.