ubuntu 9.10 cant define root password

hi
when i try to define a password for root
i to go user and groups
then i unlock it
and in root properties i define a new password

when i am in terminal
runing "su"
su: Authentication failure

i never had this problem
this 9.10 release is starting with too many issues
can any helpme?
thanks

We don't offer support here for enabling the root account:
http://ubuntuforums.org/showthread.php?t=716201

If you believe there is a bug in the actual password-setting interface, file a bug report at https://bugs.launchpad.net

If you need to run as root for longer that the timeout, I would suggest using:

Code:

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sudo -i

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This will drop you to a root prompt, and you can do what you need. So far I haven't found anything root can do that sudo -i can't.