Can't 'su' in Ubuntu 9.4 Terminal.
I just recently installed Ubuntu 9.4 and had it working just fine. Now I need to use su in a terminal to remove an anti virus package I had installed. I am prompted for 'password' but I don't remember it and every one that I think may be correct results in 'Authentication failure'.
I have searched the forum and read quite a bit of info that makes me think I will have to reinstall and start from scratch again.
Is there any way to recover the password I assigned, or will I have to do a new install?