My Amanda 3.3.0 setup is regularly freezing, and I can't figure out why. For example, last Friday night's backup has been "running" until now (Tuesday afternoon). I had to terminate it using amcleanup -k

Amanda log files seem to be very esoteric so I'm not sure which ones are going to be useful to help identify the problem; I can't see anything from looking through them. Below is my amdump output.

I am backing up a combination of Amanda Clients on Linux and Windows, as well as Samba shares from a NAS device via localhost. Backup destination is a 4tb external SATA hard drive caddy.

Can someone point me in the right direction to working out what isn't happy?

Code:
*** THE DUMPS DID NOT FINISH PROPERLY!

Hostname: svr-amanda.xxxxxx.com.au
Org     : Daily Backup
Config  : DailySet1
Date    : November 4, 2011

These dumps were to tape DailySet1-11.
The next tape Amanda expects to use is: DailySet1-12.
FAILURE DUMP SUMMARY:
  svr-edi-tux1.xxxxxx.com.au /srv/edi RESULTS MISSING
  theta.xxxxxx.com.au /usr/local RESULTS MISSING
  epsilon.xxxxxx.com.au /var/www RESULTS MISSING
  epsilon.xxxxxx.com.au /srv/tftp RESULTS MISSING
  epsilon.xxxxxx.com.au /usr/local RESULTS MISSING
  localhost //nas-office-01.xxxxxx.local/Multimedia RESULTS MISSING
  localhost //nas-office-01.xxxxxx.local/sales_marketing RESULTS MISSING
  localhost //nas-office-01.xxxxxx.local/pst-files RESULTS MISSING
  localhost //nas-office-01.xxxxxx.local/TechDept RESULTS MISSING
  svr-addc-01.xxxxxx.local "E:/" RESULTS MISSING
  svr-app-win1.xxxxxx.local "C:/" RESULTS MISSING
  svr-app-win1.xxxxxx.local "E:/" RESULTS MISSING
  natorgsvr.xxxxxx.local "F:/" RESULTS MISSING
  natorgsvr.xxxxxx.local "D:/AD Backup" RESULTS MISSING
  warehousemgr-pc.xxxxxx.local "C:/PaxarCD" RESULTS MISSING
  warehousemgr-pc.xxxxxx.local "C:/VCSystem" RESULTS MISSING
  warehousemgr-pc.xxxxxx.local "C:/vcbackup" RESULTS MISSING
  natorgsvr.xxxxxx.local "D:/HomeDirs" lev 1  FAILED [data timeout]



STATISTICS:
                          Total       Full      Incr.   Level:#
                        --------   --------   --------  --------
Estimate Time (hrs:min)     0:03
Run Time (hrs:min)          0:04
Dump Time (hrs:min)         0:02       0:00       0:02
Output Size (meg)            0.1        0.0        0.1
Original Size (meg)          1.1        0.0        1.1
Avg Compressed Size (%)     12.3        --        12.3
DLEs Dumped                   13          0         13  1:13
Avg Dump Rate (k/s)          1.0        --         1.0

Tape Time (hrs:min)         0:02       0:00       0:02
Tape Size (meg)              0.1        0.0        0.1
Tape Used (%)                0.0        0.0        0.0
DLEs Taped                    13          0         13  1:13
Parts Taped                   13          0         13  1:13
Avg Tp Write Rate (k/s)      1.4        --         1.4

USAGE BY TAPE:
  Label               Time         Size      %  DLEs Parts
  DailySet1-11        0:02           0G    0.0    13    13

FAILED DUMP DETAILS:
  /-- natorgsvr.xxxxxx.local "D:/HomeDirs" lev 1 FAILED [data timeout]
  sendbackup: start [natorgsvr.xxxxxx.local:"D:/HomeDirs" level 1]
  sendbackup: info BACKUP=pkzip
  sendbackup: info RECOVER_CMD=Extract with zmanda windows client or unzip program
  sendbackup: info end
  \--------

NOTES:
  driver: Taper protocol error
  driver: going into degraded mode because of taper component error.
  dumper: amcrypt-ossl pid 1898
  dumper: amcrypt-ossl pid 1908
  dumper: amcrypt-ossl pid 1918
  dumper: amcrypt-ossl pid 1930
  dumper: amcrypt-ossl pid 1952
  dumper: amcrypt-ossl pid 1977
  dumper: amcrypt-ossl pid 1987
  dumper: amcrypt-ossl pid 2001
  dumper: amcrypt-ossl pid 2020
  dumper: amcrypt-ossl pid 2034
  dumper: amcrypt-ossl pid 2051
  taper: Slot 11 with label DailySet1-11 is usable


DUMP SUMMARY:
                                       DUMPER STATS               TAPER STATS
HOSTNAME     DISK        L ORIG-GB  OUT-GB  COMP%  MMM:SS   KB/s MMM:SS   KB/s
-------------------------- ------------------------------------- -------------
backup-mx.na /etc        1       0       0    6.0    0:00   22.7   0:00   60.0
backup-mx.na /usr/local  1       0       0    4.3    0:00   13.1   0:00   30.0
backup-mx.na /var/spool  1       0       0    3.3    0:00    9.9   0:00   20.0
edi-pc.nator "C:/ABS"    1       0       0     --    0:25    0.1   0:14    0.1
edi-pc.nator "-/InTouch" 1       0       0   30.8    1:06    0.1   0:55    0.1
epsilon.ftg. /etc        1       0       0    7.2    0:05    2.7   0:00  130.0
epsilon.ftg. /srv/tftp     MISSING -------------------------------------------
epsilon.ftg. /usr/local    MISSING -------------------------------------------
epsilon.ftg. /var/www      MISSING -------------------------------------------
localhost    -cal/Design 1               0    --     0:18    3.4   0:18    3.4
localhost    -Multimedia   MISSING -------------------------------------------
localhost    -l/TechDept   MISSING -------------------------------------------
localhost    -cal/Trydel   MISSING -------------------------------------------
localhost    -/pst-files   MISSING -------------------------------------------
localhost    -_marketing   MISSING -------------------------------------------
localhost    /usr/local  1       0       0    4.4    0:05    1.0   0:00   40.0
natorgsvr.na "-D Backup"   MISSING -------------------------------------------
natorgsvr.na "-HomeDirs"   MISSING -------------------------------------------
natorgsvr.na "-/merak.d" 1       0       0     --    0:15    0.1   0:05    0.2
natorgsvr.na "F:/"         MISSING -------------------------------------------
svr-addc-01. "E:/"         MISSING -------------------------------------------
svr-app-win1 "C:/"         MISSING -------------------------------------------
svr-app-win1 "E:/"         MISSING -------------------------------------------
svr-edi-tux1 /etc        1       0       0    7.0    0:00  115.9   0:02    7.0
svr-edi-tux1 /srv/edi      MISSING -------------------------------------------
svr-edi-tux1 /usr/local  1       0       0    4.6    0:00   89.6   0:00   60.0
svr-edi-tux1 -b/rabbitmq 1       0       0    5.0    0:00   41.1   0:00   20.0
theta.ftg.na /etc        1       0       0    6.8    0:00  152.2   0:00  130.0
theta.ftg.na /usr/local    MISSING -------------------------------------------
warehousemgr "-/PaxarCD"   MISSING -------------------------------------------
warehousemgr "-VCSystem"   MISSING -------------------------------------------
warehousemgr "-vcbackup"   MISSING -------------------------------------------

(brought to you by Amanda version 3.3.0)
(I have sanitized our domain from this log, other than that it is verbatim.)