Question : error while establishing a VPN tunnel

Dear All,

i have already a running site-to-site VPN tunnel. suddenly it stopped working. I was checking the log and i got these errors when he was trying to ping my local machine:
6|May 17 2010 10:53:46|713905: IP = 11.22.33.44, P1 Retransmit msg dispatched to MM FSM
5|May 17 2010 10:53:46|713201: IP = 11.22.33.44, Duplicate Phase 1 packet detected.  Retransmitting last packet.
4|May 17 2010 10:53:27|713903: IP = 11.22.33.44, Error: Unable to remove PeerTblEntry
3|May 17 2010 10:53:27|713902: IP = 11.22.33.44, Removing peer from peer table failed, no match!
4|May 17 2010 10:53:24|713903: IP = 11.22.33.44, Error: Unable to remove PeerTblEntry
3|May 17 2010 10:53:24|713902: IP = 11.22.33.44, Removing peer from peer table failed, no match!
6|May 17 2010 10:53:19|713905: IP = 11.22.33.44, P1 Retransmit msg dispatched to MM FSM
5|May 17 2010 10:53:19|713201: IP = 11.22.33.44, Duplicate Phase 1 packet detected.  Retransmitting last packet.
6|May 17 2010 10:53:11|713905: IP = 11.22.33.44, P1 Retransmit msg dispatched to MM FSM
5|May 17 2010 10:53:11|713201: IP = 11.22.33.44, Duplicate Phase 1 packet detected.  Retransmitting last packet.
4|May 17 2010 10:52:44|713903: IP = 11.22.33.44, Error: Unable to remove PeerTblEntry
3|May 17 2010 10:52:44|713902: IP = 11.22.33.44, Removing peer from peer table failed, no match!
6|May 17 2010 10:52:44|713905: IP = 11.22.33.44, P1 Retransmit msg dispatched to MM FSM
5|May 17 2010 10:52:44|713201: IP = 11.22.33.44, Duplicate Phase 1 packet detected.  Retransmitting last packet.
6|May 17 2010 10:52:36|713905: IP = 11.22.33.44, P1 Retransmit msg dispatched to MM FSM
5|May 17 2010 10:52:36|713201: IP = 11.22.33.44, Duplicate Phase 1 packet detected.  Retransmitting last packet.
6|May 17 2010 10:52:28|302015: Built inbound UDP connection 3209270 for WAN:11.22.33.44/500 (11.22.33.44/500) to NP Identity Ifc:11.11.11.11/500 (11.11.11.11/500)




note:  i am using CISCO ASA 5510


any recommendation ? 
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6|May 17 2010 10:53:46|713905: IP = 11.22.33.44, P1 Retransmit msg dispatched to MM FSM
5|May 17 2010 10:53:46|713201: IP = 11.22.33.44, Duplicate Phase 1 packet detected.  Retransmitting last packet.
4|May 17 2010 10:53:27|713903: IP = 11.22.33.44, Error: Unable to remove PeerTblEntry
3|May 17 2010 10:53:27|713902: IP = 11.22.33.44, Removing peer from peer table failed, no match!
4|May 17 2010 10:53:24|713903: IP = 11.22.33.44, Error: Unable to remove PeerTblEntry
3|May 17 2010 10:53:24|713902: IP = 11.22.33.44, Removing peer from peer table failed, no match!
6|May 17 2010 10:53:19|713905: IP = 11.22.33.44, P1 Retransmit msg dispatched to MM FSM
5|May 17 2010 10:53:19|713201: IP = 11.22.33.44, Duplicate Phase 1 packet detected.  Retransmitting last packet.
6|May 17 2010 10:53:11|713905: IP = 11.22.33.44, P1 Retransmit msg dispatched to MM FSM
5|May 17 2010 10:53:11|713201: IP = 11.22.33.44, Duplicate Phase 1 packet detected.  Retransmitting last packet.
4|May 17 2010 10:52:44|713903: IP = 11.22.33.44, Error: Unable to remove PeerTblEntry
3|May 17 2010 10:52:44|713902: IP = 11.22.33.44, Removing peer from peer table failed, no match!
6|May 17 2010 10:52:44|713905: IP = 11.22.33.44, P1 Retransmit msg dispatched to MM FSM
5|May 17 2010 10:52:44|713201: IP = 11.22.33.44, Duplicate Phase 1 packet detected.  Retransmitting last packet.
6|May 17 2010 10:52:36|713905: IP = 11.22.33.44, P1 Retransmit msg dispatched to MM FSM
5|May 17 2010 10:52:36|713201: IP = 11.22.33.44, Duplicate Phase 1 packet detected.  Retransmitting last packet.
6|May 17 2010 10:52:28|302015: Built inbound UDP connection 3209270 for WAN:11.22.33.44/500 (11.22.33.44/500) to NP Identity Ifc:195.39.137.153/500 (195.39.137.153/500)

Answer : error while establishing a VPN tunnel

I suppose it is nothing that simple as a changed remote gateway address?
What if you initiate the tunnel negotiation?
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