Can't login

Hi!
I installed openssh-3.9p1 on linux machine (web). Didn't change any of
configuration files (this worked on other machines), and can't login.
Wnen I try to login on localhost (for testing purpose) in rlogin session
#> ssh u0100659@web
I get an error:
--
u0100659@web's password:
Read from remote host web: Connection reset by peer
Connection to web closed.
--
And when I try to login from external terminal PuTTY, I can't and get
following in security.log:
--
Dec  2 09:47:13 web sshd[63]: debug1: Forked child 4638.
Dec  2 09:47:13 web sshd[4638]: debug1: rexec start in 4 out 4 newsock 4
pipe 6sock 7
Dec  2 09:47:13 web sshd[4638]: debug1: inetd sockets after dupping: 3, 3
Dec  2 09:47:13 web sshd[4638]: Connection from 195.144.197.131 port 1064
Dec  2 09:47:13 web sshd[4638]: debug1: Client protocol version 2.0;
client software version PuTTY-Release-0.56
Dec  2 09:47:13 web sshd[4638]: debug1: no match: PuTTY-Release-0.56
Dec  2 09:47:13 web sshd[4638]: debug1: Enabling compatibility mode for
protocol 2.0
Dec  2 09:47:13 web sshd[4638]: debug1: Local version string
SSH-1.99-OpenSSH_3.9p1
Dec  2 09:47:23 web sshd[4638]: Failed none for u0100659 from
195.144.197.131 port 1064 ssh2
Dec  2 09:47:33 web sshd[4638]: Accepted password for u0100659 from
195.144.197.131 port 1064 ssh2
Dec  2 09:47:33 web sshd[4638]: debug1: monitor_child_preauth: u0100659
has been authenticated by privileged process
Dec  2 09:47:33 web sshd[4638]: debug1: do_cleanup
--
Tell me, please, why this can be?

--
Andrew.