Question about warning: "invalid resource manager ID 128 at ..." on hot stanby

Hi all.

Database version used 9.0.4 on FreeBSD 7.3.

Today ,after restart of replica db, I got the next warning in log:
>2012-03-23 03:10:08.221 MSK 55096 @ from [vxid:1/0 txid:0] []LOG:
invalid resource manager ID 128 at 44E/4E7303B0

I searched over mailing lists but I still not sure is it harmless or no...
Full log looks like:

2012-03-23 03:08:46.465 MSK 38622 @ from [vxid: txid:0] []LOG: received
fast shutdown request
2012-03-23 03:08:46.465 MSK 38622 @ from [vxid: txid:0] []LOG: aborting
any active transactions
2012-03-23 03:08:46.465 MSK 38627 @ from [vxid: txid:0] []FATAL:
terminating walreceiver process due to administrator command
2012-03-23 03:08:46.693 MSK 38718 @ from [vxid: txid:0] []LOG: shutting
down
2012-03-23 03:08:46.696 MSK 38718 @ from [vxid: txid:0] []LOG: database
system is shut down
2012-03-23 03:08:53.850 MSK 55096 @ from [vxid: txid:0] []LOG: database
system was shut down in recovery at 2012-03-23 03:08:46 MSK
2012-03-23 03:08:53.874 MSK 55096 @ from [vxid: txid:0] []LOG: entering
standby mode
2012-03-23 03:08:53.905 MSK 55096 @ from [vxid:1/0 txid:0] []LOG: redo
starts at 44E/114060E8
2012-03-23 03:10:08.221 MSK 55096 @ from [vxid:1/0 txid:0] []LOG:
consistent recovery state reached at 44E/4E7303B0
2012-03-23 03:10:08.221 MSK 55096 @ from [vxid:1/0 txid:0] []LOG: invalid
resource manager ID 128 at 44E/4E7303B0
2012-03-23 03:10:08.222 MSK 55093 @ from [vxid: txid:0] []LOG: database
system is ready to accept read only connections
2012-03-23 03:10:08.239 MSK 56317 @ from [vxid: txid:0] []LOG: streaming
replication successfully connected to primary

Is that warning harmless on 9.0.4 or should I start to worry about?

--
Maxim Boguk
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