use of SU on 3.5

[rhino64_(_at_)_freesurf_(_dot_)_ch]

Hi All,
      I am currently trying to use the "su" command on 3.5 snapshot (quite
old snapshot indeed) without success.

I get the following message each time:

-----------------------------------------------------------------------------
sourire:alain {101} su -
Password:
Sorry

-----------------------------------------------------------------------------

I can connect as root user, and the given password is correct. The user
"alain" is is wheel group, has the "staff" login configuration and the
"/bin/csh" shell.

I have seen mention of the problem sowmewhere in a discussion list digest
but no solution.

Is this problem related to 3.5 snapshot ?

Any help will be greatly appreciated.


best regards,


Alain