Unable to connect to remote server

[Xarz991]

Debug report:
Failure communicating with remote server. Please try again later.

Debug message: The statement was aborted because it would have caused a duplicate key value in a unique or primary key constraint or unique index identified by 'I_REMOTE_ID' defined on 'DATA_SOURCE_ITEM'.

Exception:

com.zimbra.common.service.ServiceException: system failure: Unable to update mapping for dataSource CSJ Gmail
ExceptionId:btpool0-1:1240460133145:28206536473fe364
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:253)
at com.zimbra.cs.db.DbDataSource.updateMapping(DbData Source.java:121)
at com.zimbra.cs.db.DbDataSource.addMapping(DbDataSou rce.java:89)
at com.zimbra.cs.datasource.CalDavDataImport.applyRem oteItem(CalDavDataImport.java:438)
at com.zimbra.cs.datasource.CalDavDataImport.sync(Cal DavDataImport.java:497)
at com.zimbra.cs.datasource.CalDavDataImport.importDa ta(CalDavDataImport.java:77)
at com.zimbra.cs.offline.OfflineCalDavDataImport.impo rtData(OfflineCalDavDataImport.java:53)
at com.zimbra.cs.offline.OfflineImport.importData(Off lineImport.java:88)
at com.zimbra.cs.offline.GMailImport.importData(GMail Import.java:54)
at com.zimbra.cs.datasource.DataSourceManager.importD ata(DataSourceManager.java:154)
at com.zimbra.cs.mailbox.LocalMailbox.importData(Loca lMailbox.java:417)
at com.zimbra.cs.mailbox.LocalMailbox.syncAllLocalDat aSources(LocalMailbox.java:389)
at com.zimbra.cs.mailbox.LocalMailbox.sync(LocalMailb ox.java:431)
at com.zimbra.cs.service.offline.OfflineSync.handle(O fflineSync.java:49)
at com.zimbra.soap.SoapEngine.dispatchRequest(SoapEng ine.java:429)
at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.jav a:286)
at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.jav a:160)
at com.zimbra.soap.SoapServlet.doPost(SoapServlet.jav a:269)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:727)
at com.zimbra.cs.servlet.ZimbraServlet.service(Zimbra Servlet.java:190)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(Ser vletHolder.java:487)
at org.mortbay.jetty.servlet.ServletHandler.handle(Se rvletHandler.java:362)
at org.mortbay.jetty.security.SecurityHandler.handle( SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(Se ssionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(Co ntextHandler.java:716)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebA ppContext.java:406)
at org.mortbay.jetty.handler.ContextHandlerCollection .handle(ContextHandlerCollection.java:211)
at org.mortbay.jetty.handler.HandlerCollection.handle (HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:139)
at org.mortbay.jetty.handler.RewriteHandler.handle(Re writeHandler.java:176)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:313)
at org.mortbay.jetty.HttpConnection.handleRequest(Htt pConnection.java:506)
at org.mortbay.jetty.HttpConnection$RequestHandler.co ntent(HttpConnection.java:844)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser. java:644)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpPa rser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnec tion.java:381)
at org.mortbay.io.nio.SelectChannelEndPoint.run(Selec tChannelEndPoint.java:396)
at org.mortbay.thread.BoundedThreadPool$PoolThread.ru n(BoundedThreadPool.java:442)
Caused by: java.sql.SQLException: The statement was aborted because it would have caused a duplicate key value in a unique or primary key constraint or unique index identified by 'I_REMOTE_ID' defined on 'DATA_SOURCE_ITEM'.
at org.apache.derby.impl.jdbc.SQLExceptionFactory.get SQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.generateCsSQLExcep tion(Unknown Source)
at org.apache.derby.impl.jdbc.TransactionResourceImpl .wrapInSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.TransactionResourceImpl .handleException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.handleE xception(Unknown Source)
at org.apache.derby.impl.jdbc.ConnectionChild.handleE xception(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedStatement.executeS tatement(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement. executeStatement(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement. executeUpdate(Unknown Source)
at org.apache.commons.dbcp.DelegatingPreparedStatemen t.executeUpdate(DelegatingPreparedStatement.java:2 33)
at com.zimbra.cs.db.DbDataSource.updateMapping(DbData Source.java:118)
... 38 more
Caused by: ERROR 23505: The statement was aborted because it would have caused a duplicate key value in a unique or primary key constraint or unique index identified by 'I_REMOTE_ID' defined on 'DATA_SOURCE_ITEM'.
at org.apache.derby.iapi.error.StandardException.newE xception(Unknown Source)
at org.apache.derby.impl.sql.execute.IndexChanger.ins ertAndCheckDups(Unknown Source)
at org.apache.derby.impl.sql.execute.IndexChanger.fin ish(Unknown Source)
at org.apache.derby.impl.sql.execute.IndexSetChanger. finish(Unknown Source)
at org.apache.derby.impl.sql.execute.RowChangerImpl.f inish(Unknown Source)
at org.apache.derby.impl.sql.execute.UpdateResultSet. open(Unknown Source)
at org.apache.derby.impl.sql.GenericPreparedStatement .execute(Unknown Source)
... 43 more

[JLee]

What are the activities on your google calendar prior to seeing this exception?