How to reset forgotten password in Ubuntu

If you forget your password in Ubuntu, you can simply set a new one:

• Reboot into recovery mode
• In the recovery menu choose "boot"
• Type "passwd <YOUR_LOGIN>"
• Type the new password (it will look like you were not typing) and press enter
• Retype (the same as above) and press enter
• Type "exit" and press enter: you'll go back to the recovery menu
• Select "resume normal boot"
• If the system restarts in console mode type "startx" after having logged in.

That's all, simple and fast! ;)