[gentoo-user] unable to login to user account or do su - username

[Valmor de Almeida]

Hello,

After a system/world update my user account dealmeida cannot be logged 
to or root cannot su to it. When su - dealmeida is issued at the root 
command prompt, it immediately returns to root. When login is at the 
console the motd appears (twice; why?) and then the session is closed. 
In the /var/log/messages I get

May  2 20:42:35 xeon0 su[29286]: Successful su for dealmeida by root
May  2 20:42:35 xeon0 su[29286]: + pts/1 root:dealmeida
May  2 20:42:35 xeon0 su[29286]: pam_unix(su:session): session opened 
for user dealmeida by root(uid=0)
May  2 20:42:35 xeon0 su[29286]: pam_unix(su:session): session closed 
for user dealmeida

No other account has this problem.

Any ideas?

Thanks,

--
Valmor