Note for others: in order to eliminate this error message,
pam_mount(pam_mount.c:100): unknown pam_mount option "use_first_pass"
everytime when su-ing to root,
I had to edit /etc/pam.d/common-pammount (as suggested),
and also /etc/pam.d/common-auth (which was only hinted at by the first reply
I hadn't seen cheoppy's report: so my report is a second towards his
initial suggestion.
I also am about to setup encrypted home; and if I see problems like
reported here, I will update my report.
As I am also about to work with Netatalk and libpam-mount, that may
provide an additional view of an
