pam_auth pam_end()

["Eugene M. Zheganin" <eugene@xxxxxxxxx>]

 Hi.

I'm running squid of different versions on my FreeBSD boxes (8.x, 
i386/amd64).
I'm also using pam_auth to authenticate users against local (pam_unix) 
and kerberos security databases.

Regardless of the arch and version, I have a couple of the boxes that 
periodically fail to release pam_auth.
For example, I had this situation on 2.7 and I'm currently having it on 
a 3.1 box. On the version 2.7 squid complains about in in its log, 
saying 'WARNING: failed to release PAM authenticator'. 3.1 does this no 
more, but the problem persists. How can I debug/solve this problem ? I 
see the only possibility - adding a pam_strerror() after pam_end() to 
see what is really happening, but may be I'm reinventing the wheel, and 
the solution is already known.

Thanks.
Eugene.