sudo password issue

Hello,

I upgraded to OS X Yosemite from Mavericks and my DBD::mysql driver for Perl seems to have gone missing. I am trying to reinstall through manual install using terminal utility (cpan install didn't work either), but fails in the last step "make install" with some permission issues. So I tried to do a "sudo make install" instead and at the password prompt, when I enter the admin password, it keeps saying "Sorry, try again". Then it bails out after 3 attempts.

I have tried changing the password from caps to lowercase to all numerals, but no password at the terminal prompt seems to work. However, when I reboot and go through the login window, it accepts admin password there.

I guess I have 2 issues here - first, why is sudo password at the terminal not working. It remains to be seen if my DBD::mysql driver will install once I am able to run "make install" as admin.

Cheers.