Upgrade to 2.6.37 can't login anymore

Question

Dear friends,
after upgrade to newest kernel I can no longer login to my machine! Not even from the console. I can see the login promt, but after entering (any) username, it drops back to the same promt without asking for password. I booted off a rescue cd to read the logs, and the only strange thing I read in /var/log/auth file is: agety:[pid] can't exec /bin/login Exec format error.
If anyone? please
Girts

Answer 1

Yes, I forgot to add whats going on exactly in /var/log/auth.log when I try to login.
tail -f /mnt/custom/var/log/auth.log
Feb  1 17:55:57 dell agetty[3327]: tty1: can't exec /bin/login: Exec format error
Feb  1 17:56:25 dell agetty[4279]: tty1: can't exec /bin/login: Exec format error
Feb  1 17:56:47 dell agetty[3332]: tty6: can't exec /bin/login: Exec format error
Feb  1 17:56:54 dell agetty[4284]: tty1: can't exec /bin/login: Exec format error
Feb  1 17:59:05 dell agetty[3272]: tty1: can't exec /bin/login: Exec format error
Feb  1 18:01:40 dell agetty[3297]: tty1: can't exec /bin/login: Exec format error
Feb  1 19:12:54 dell agetty[3314]: tty1: can't exec /bin/login: Exec format error
Feb  5 17:56:13 dell agetty[3298]: tty1: can't exec /bin/login: Exec format error
Feb  5 17:58:15 dell agetty[4247]: tty1: can't exec /bin/login: ExecFeb  6 14:18:56 dell agetty[3306]: tty1: can't exec /bin/login: Exec format error
Feb  6 14:19:54 dell agetty[3308]: tty3: can't exec /bin/login: Exec format error