Recently I added a new account for my son to use as a seperate login on our tv computer.
It used a different password. He's 4 and I wanted to him to learn about using computers.

About a day later I decided to simplify, and revert to the one account. I deleted the new account and when I went to choose a new password for my account, I discovered that the accounts are now all out of whack.

What should I do?

Reinstall or is there a way to somehow fix this.

My password works to unlock the keyring, but it will not work to update the system.