Please, help a newbie in amanda.

I have amanda up and running backups from several machines on my network.
Amanda version is 2.4.5 for both server and clients. The server 

runs Linux 2.6.9-1.

Everything runs fine, except from one machine.

The mail report says:
========================
FAILURE AND STRANGE DUMP SUMMARY:
  matriz     /desenv/root/intelc lev 0 FAILED [Request to matriz timed out.]
  matriz     /desenv/root/desenv lev 0 FAILED [Request to matriz timed out.]
  matriz     /root/Thinstation-2.1 lev 0 FAILED [Request to matriz timed
out.]
  matriz     /mnt/padrao-rtpn.wrap lev 0 FAILED [Request to matriz timed
out.]
  matriz     /mnt/padrao-rtpn.syn lev 0 FAILED [Request to matriz timed
out.]
  matriz     /mnt/padrao-rtpn lev 0 FAILED [Request to matriz timed out.]
  matriz     /mnt/padrao-flashrepetidoras lev 0 FAILED [Request to matriz
timed out.]
  matriz     /mnt/flash-repetidoras lev 0 FAILED [Request to matriz timed
out.]
========================


The amstatus command says: 
========================
kompressor:/usr/local/etc           0       50k finished (16:17:12)
kompressor:/usr/sbin                0     8106k finished (16:17:37)
matriz:/desenv/root/desenv          0 planner: [Request to matriz timed
out.]
matriz:/desenv/root/intelc          0 planner: [Request to matriz timed
out.]
matriz:/mnt/flash-repetidoras       0 planner: [Request to matriz timed
out.]
matriz:/mnt/padrao-flashrepetidoras 0 planner: [Request to matriz timed
out.]
matriz:/mnt/padrao-rtpn             0 planner: [Request to matriz timed
out.]
matriz:/mnt/padrao-rtpn.syn         0 planner: [Request to matriz timed
out.]
matriz:/mnt/padrao-rtpn.wrap        0 planner: [Request to matriz timed
out.]
matriz:/root/Thinstation-2.1        0 planner: [Request to matriz timed
out.]
monitor:/root/desenv                0      748k finished (16:17:15)
monitor:/root/tar                   0   141550k finished (16:25:38)
monitor:/usr/local/apache/conf      0       70k finished (16:17:07)
========================


Looks like the host 'matriz' is down, but...

The amcheck command says:
========================
Amanda Tape Server Host Check
-----------------------------
Holding disk /dumps/amanda: 13816308 kB disk space available, that's plenty
amcheck-server: slot 6: date 20050518 label Servidores06 (exact label match)
NOTE: skipping tape-writable test
Tape Servidores06 label ok
NOTE: index dir /usr/local/etc/amanda/Servidores/index/matriz: does not
exist
NOTE: it will be created on the next run.
Server check took 0.092 seconds

Amanda Backup Client Hosts Check
--------------------------------
Client check: 5 hosts checked in 10.079 seconds, 0 problems found
========================


Inside amanda.conf, the timeout options:
========================
etimeout 500
dtimeout 1800
ctimeout 30 
========================


Can you give me a clue of what problem can be happening on that machine?

Thanks in advance

Andre Azevedo

PS: Sorry for the poor English.