Ftpd alarms

Hi,

I am facing following alarms in var/adm/messages after an interval of 10 mins. I dont know what the impact is and how can i fix it. Can anyone help please?

Dec  4 07:50:03 hxcsvc-a01 ftpd[17673]: [ID 776383 auth.error] open_module: stat(/usr/lib/security/pam_unix_session.so.1) failed: No such file or directory
Dec  4 07:50:03 hxcsvc-a01 ftpd[17673]: [ID 487707 auth.error] load_modules: can not open module /usr/lib/security/pam_unix_session.so.1

have you looked if you could find what it wants: /usr/lib/security/pam_unix_session.so.1 ?
If present what are the perms then...

This file is present at this location with these rights

-rwxr-xr-x 1 root bin 20652 Mar 19 2008 pam_unix_session.so.1

Your ftpd is likely ruuning under a chrooted environment.

This means your chroot environment cannot see all of the files it needs to login. You need to create a more robust fake "/usr" file tree for the chroot jail. DO NOT use links, that defeats the chrooted jail.