SU QUESTION

[A. Pintos]

Hi all,

I have two users (ana, laura) defined in the same group (users) with the
same .profile:

su soft -c /home/soft/central
exit

when ana logins it prompts only her password, but when laura logins it
prompts her password and then the password of soft user. Where is the
difference, that I can�t find it?,
            Thanks,
                        In�s