[vox-tech] login oddity

[Cylar Z]

Hey all,

I was trying to log into my FC6 system the other day
and was able to do so. However, I attempted to do so
again a few hours later, and was denied access. I've
attached the relevant portion of /var/log/secure
below:


Dec 14 21:08:07 localhost sshd[29350]: Accepted
password for cylar from 64.30.124.105 port 1121 ssh2
Dec 14 21:08:14 localhost sshd[29350]:
pam_unix(sshd:session): session opened for user cylar
by (uid=0)
Dec 14 21:09:13 localhost su: pam_unix(su-l:auth):
authentication failure; logname=cylar uid=500 euid=0
tty=pts/0 ruser=cylar rhost=  user=root
Dec 14 23:20:40 localhost sshd[29350]:
pam_keyinit(sshd:session): Unable to change GID to 500
temporarily
Dec 14 23:20:40 localhost sshd[29350]:
pam_unix(sshd:session): session closed for user cylar
Dec 15 02:06:23 localhost sshd[30153]: refused connect
from ::ffff:64.30.124.105 (::ffff:64.30.124.105)
Dec 15 02:07:05 localhost sshd[30156]: refused connect
from ::ffff:64.30.124.105 (::ffff:64.30.124.105)

What gives? I double-checked and the firewall settings
were unchanged from one time to the other (near as I
can tell), as was my TCP wrappers scheme. 

Then, the following evening, I was able to log in as
usual:

Dec 15 22:25:36 localhost sshd[32762]: Accepted
password for cylar from 64.30.124.105 port 1771 ssh2
Dec 15 22:25:41 localhost sshd[32762]:
pam_unix(sshd:session): session opened for user cylar
by (uid=0)

What would make PAM lock me out, even temporarily?

Thanks, Matt