Fwd: Strange 9.6.0-P1 issue

[c0re dumped]

> You need to provide actual DNS names and IP addresses, otherwise we
> won't be able to help you.

19-Mar-2009 08:37:07.130 no valid RRSIG resolving
'www.estadao.com.br/A/IN': 200.185.6.131#53
19-Mar-2009 08:37:07.147 no valid RRSIG resolving
'www.estadao.com.br/A/IN': 200.185.6.163#53
19-Mar-2009 08:37:09.870 no valid RRSIG resolving
'www.cade.com.br/A/IN': 68.180.131.16#53
19-Mar-2009 08:37:10.122 no valid RRSIG resolving
'www.cade.com.br/A/IN': 217.12.4.104#53
19-Mar-2009 08:37:10.300 no valid RRSIG resolving
'www.cade.com.br/A/IN': 68.142.196.63#53
19-Mar-2009 08:37:10.469 no valid RRSIG resolving
'www.cade.com.br/A/IN': 68.142.255.16#53
19-Mar-2009 08:37:10.900 no valid RRSIG resolving
'www.cade.com.br/A/IN': 119.160.247.124#53
19-Mar-2009 08:37:28.378 no valid RRSIG resolving
'www.cade.com.br/A/IN': 68.142.255.16#53
19-Mar-2009 08:37:28.629 no valid RRSIG resolving
'www.cade.com.br/A/IN': 217.12.4.104#53
19-Mar-2009 08:37:28.808 no valid RRSIG resolving
'www.cade.com.br/A/IN': 68.142.196.63#53
19-Mar-2009 08:37:28.989 no valid RRSIG resolving
'www.cade.com.br/A/IN': 68.180.131.16#53
19-Mar-2009 08:37:29.427 no valid RRSIG resolving
'www.cade.com.br/A/IN': 119.160.247.124#53
19-Mar-2009 08:37:59.762 no valid RRSIG resolving
'www.terra.com.br/A/IN': 200.176.2.172#53
19-Mar-2009 08:37:59.804 no valid RRSIG resolving
'www.terra.com.br/A/IN': 200.176.2.173#53
19-Mar-2009 08:41:09.933 no valid RRSIG resolving
'www.trueaccess.com.br/A/IN': 200.202.33.11#53
19-Mar-2009 08:41:09.952 no valid RRSIG resolving
'www.trueaccess.com.br/A/IN': 200.202.33.10#53
19-Mar-2009 08:42:59.755 no valid RRSIG resolving
'www.terra.com.br/A/IN': 200.176.2.173#53
19-Mar-2009 08:42:59.797 no valid RRSIG resolving
'www.terra.com.br/A/IN': 200.176.2.172#53
19-Mar-2009 08:43:12.055 no valid RRSIG resolving
'www.folha.uol.com.br/A/IN': 200.221.11.98#53
19-Mar-2009 08:43:12.103 no valid RRSIG resolving
'www.folha.uol.com.br/A/IN': 200.98.255.99#53
19-Mar-2009 08:43:12.140 no valid RRSIG resolving
'www.folha.uol.com.br/A/IN': 200.147.255.105#53
19-Mar-2009 08:43:12.362 no valid RRSIG resolving
'www.folha.uol.com.br/A/IN': 208.113.76.82#53
19-Mar-2009 08:43:16.012 no valid RRSIG resolving
'www.sexlog.com.br/A/IN': 67.19.72.206#53
19-Mar-2009 08:43:16.218 no valid RRSIG resolving
'www.sexlog.com.br/A/IN': 66.252.1.255#53
19-Mar-2009 08:43:21.408 no valid RRSIG resolving
'www.uol.com.br/A/IN': 200.221.11.98#53
19-Mar-2009 08:43:21.449 no valid RRSIG resolving
'www.uol.com.br/A/IN': 200.98.255.99#53
19-Mar-2009 08:43:21.480 no valid RRSIG resolving
'www.uol.com.br/A/IN': 200.147.255.105#53
19-Mar-2009 08:43:21.699 no valid RRSIG resolving
'www.uol.com.br/A/IN': 208.113.76.82#53
19-Mar-2009 08:43:33.019 no valid RRSIG resolving
'www.saude.gov.br/A/IN': 200.214.130.67#53
19-Mar-2009 08:43:33.040 no valid RRSIG resolving
'www.saude.gov.br/A/IN': 200.214.130.65#53

When I use another named server, I'm able to access all of them
without problems.

The weird thing: when I restart named daemon, all these address are resolved.

named restarted:

# nslookup www.saude.gov.br
Server:         200.181.67.10
Address:        200.181.67.10#53

Non-authoritative answer:
www.saude.gov.br        canonical name = bdfweb.saude.gov.br.
Name:   bdfweb.saude.gov.br
Address: 200.214.130.72

named.run:
19-Mar-2009 08:56:53.421 createfetch: www.saude.gov.br A
19-Mar-2009 08:56:53.424 decrement_reference: delete from rbt:
0x80343e8a0 csc3-2004-crl.verisign.com
19-Mar-2009 08:56:53.424 createfetch: saude.gov.br DS
19-Mar-2009 08:56:53.445   validating @0x8025ff000: gov.br SOA: no
valid signature found
19-Mar-2009 08:56:53.445 decrement_reference: delete from rbt:
0x802e90e70 terra.ipasgo.go.gov.br
19-Mar-2009 08:56:53.445 createfetch: bdfweb.saude.gov.br A
19-Mar-2009 08:56:53.452 createfetch: saude.gov.br DS


# nslookup www.folha.com.br
Server:         200.181.67.10
Address:        200.181.67.10#53

Non-authoritative answer:
www.folha.com.br        canonical name = rewrite.folha.com.br.
rewrite.folha.com.br    canonical name = ghandi.folha.com.br.
Name:   ghandi.folha.com.br
Address: 200.221.3.135

named.run:
19-Mar-2009 08:57:13.131 createfetch: stats.folha.com.br A
19-Mar-2009 08:57:13.177 createfetch: folha.com.br DS
19-Mar-2009 08:57:13.231   validating @0x801fdc000: com.br SOA: no
valid signature found
19-Mar-2009 08:57:13.231 createfetch: malinche.folha.com.br A
19-Mar-2009 08:57:13.276 createfetch: folha.com.br DS

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