strange and serious problem about user login

[Zhen Zhou]

Hi, all,
I am using Fedora 3, today I found serious problem, I couldn't start
any service other than root.
and I try to login as normal user except root, the teminal show me:
--bash: /etc/profile: Permission denied
--bash: 3.00$

and when I start sshd in this pc, I get no errors, but when I check
the status of sshd,
it showed me: sshd dead but subsys locked

When I login as root in terminal without any problem, but I keyin:
su normal-user
I got error: could not open session

I guess, maybe the user manage got problem, but I dodn't know how to
solve the problem.


Thanks a lot for any tips,



Zhou Zhen