Help i entered wrong sudo password

[WanchoPiskado]

Hello.
I joined the active directory with likewise open, running ubuntu 10.04 lts. I logged in as a active directory normal user. Then i tried to run an antivirus scan in terminal. It asked me for sudo password. I entered the wrong password twice. Logged out. Now i cannot login with my 'normal user' active directory username and password. It says authentication failure. Help. How can i regain access to this account?
Thank you

[WanchoPiskado]

I just waited an hour and now i can login again. Yaay.

[Lars Noodén]

You can also clear sudo's user timestamp by sudo -k or sudo -K, rather than waiting for the timeout.

[WanchoPiskado]

Thank you very much! Save a bit a bit of time .:p