Openfire Error Log

Hi,

how to resolve this error?

thank you.

2012.06.05 13:17:08 org.jivesoftware.openfire.spi.PresenceManagerImpl - Error storing offline presence of user: aldrin.marcha
com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Duplicate entry ‘user1’ for key 'PRIMARY’
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:931)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
at com.mysql.jdbc.Connection.execSQL(Connection.java:3283)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1332)
at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:882)
at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.logicalcobwebs.proxool.ProxyStatement.invoke(ProxyStatement.java:100)
at org.logicalcobwebs.proxool.ProxyStatement.intercept(ProxyStatement.java:57)
at $java.sql.PreparedStatement$$EnhancerByProxool$$9bd9e9a7.execute()
at org.jivesoftware.openfire.spi.PresenceManagerImpl.userUnavailable(PresenceManag erImpl.java:290)
at org.jivesoftware.openfire.handler.PresenceUpdateHandler.process(PresenceUpdateH andler.java:168)
at org.jivesoftware.openfire.handler.PresenceUpdateHandler.process(PresenceUpdateH andler.java:135)
at org.jivesoftware.openfire.handler.PresenceUpdateHandler.process(PresenceUpdateH andler.java:199)
at org.jivesoftware.openfire.PresenceRouter.handle(PresenceRouter.java:149)
at org.jivesoftware.openfire.PresenceRouter.route(PresenceRouter.java:85)
at org.jivesoftware.openfire.spi.PacketRouterImpl.route(PacketRouterImpl.java:84)
at org.jivesoftware.openfire.net.StanzaHandler.processPresence(StanzaHandler.java: 355)
at org.jivesoftware.openfire.net.ClientStanzaHandler.processPresence(ClientStanzaH andler.java:100)
at org.jivesoftware.openfire.net.StanzaHandler.process(StanzaHandler.java:272)
at org.jivesoftware.openfire.net.StanzaHandler.process(StanzaHandler.java:194)
at org.jivesoftware.openfire.nio.ConnectionHandler.messageReceived(ConnectionHandl er.java:169)
at org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived (AbstractIoFilterChain.java:570)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(Ab stractIoFilterChain.java:299)
at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilt erChain.java:53)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceive d(AbstractIoFilterChain.java:648)
at org.apache.mina.common.IoFilterAdapter.messageReceived(IoFilterAdapter.java:80)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(Ab stractIoFilterChain.java:299)
at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilt erChain.java:53)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceive d(AbstractIoFilterChain.java:648)
at org.apache.mina.filter.codec.support.SimpleProtocolDecoderOutput.flush(SimplePr otocolDecoderOutput.java:58)
at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecF ilter.java:185)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(Ab stractIoFilterChain.java:299)
at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilt erChain.java:53)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceive d(AbstractIoFilterChain.java:648)
at org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java :239)
at org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(Execut orFilter.java:283)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
at java.lang.Thread.run(Unknown Source)