Environment: amanda 2.4.4p2 client being installed on 2.4.9-31

Server (on Solaris) has been running for years, client is new.

Symptom:
 Amanda Backup Client Hosts Check
--------------------------------
ERROR: mssarc: [could not access /dev/sda12 (/iarc/vol): Permission denied]
Client check: 10 hosts checked in 5.252 seconds, 1 problem found

[root@mssarc amanda]# more /etc/xinetd.d/amanda
service amanda
{
        disable         = no
        socket_type     = dgram
        protocol        = udp
        wait            = yes
        user            = amanda
        group           = disk 
        server          = /usr/local/libexec/amandad
}

Amanda user is local to linux system. Tried amanda in various groups,
ie group 0, disk (3), sys (6) to no avail. /usr/local/libexec/ binaries
seem to be installed correct, suid bit set on rundump (root:sys).

[root@mssarc amanda]# ls -las /dev/sda12
   0 brw-rw----    1 root     disk       8,  12 Aug 30  2001 /dev/sda12

I'm not seeing where the problem lies, is there something special about
linux installs, something else special about linux installs ?

                                                thanks in advance,

                                                Brian
---
   Brian R Cuttler                 brian.cuttler AT wadsworth DOT org
   Computer Systems Support        (v) 518 486-1697
   Wadsworth Center                (f) 518 473-6384
   NYS Department of Health        Help Desk 518 473-0773