Recovering system password in Kubunto 10.10
 

Formerly I used the same password over and over with successive installations of Kubuntu. But then I started having security problems with my e-mail passwords so decided to vary this one as well. Unfortunately, I didn't record it in my list of passwords, and when the computer was out of service for a while, I forgot it. I tried reinstalling but can't get the system to boot from CD.

Boot into recovery mode and select, root console then change your user password with the passwd command.

passwd username