Me too but I have an Exchange IMAP, Gmail and Zimbra account setup. This appears on the Zimbra account.
============================== SYNC DEBUG TRACE START ==============================
2009-08-27 13:24:16,723 INFO [btpool0-21] [mid=2;] offline - >>>>>>>> name=derek@nativity.org.nz;version=1.0;build=1593; release=R;os=Linux i386 2.6.28-15-generic;server=5.0.18
2009-08-27 13:24:16,731 DEBUG [btpool0-21] [mid=2;] request - <SyncRequest typed="1" token="1557" xmlns="urn:zimbraMail"/>
2009-08-27 13:24:16,767 DEBUG [btpool0-21] [mid=2;] response - <SyncResponse md="1251336261" token="1585" xmlns="urn:zimbraMail"><folder view="message" i4ms="1558" ms="1558" md="1251330428" i4next="263" l="2" id="262" rev="1558" color="0" f="" u="0" url="" n="0" name="ipcop" s="0"><acl/></folder><m ms="1578" md="1251334720" l="2" id="263" rev="1560"/><m d="1251328968000" ms="1579" md="1251334729" f="" t="" l="2" cid="-261" id="261" rev="1551"/></SyncResponse>
2009-08-27 13:24:16,768 DEBUG [btpool0-21] [mid=2;] offline - starting delta sync [token 1557]
2009-08-27 13:24:16,805 ERROR [btpool0-21] [mid=2;] offline - sync failure:
derek@nativity.org.nz
com.zimbra.common.service.ServiceException: system failure: renumbering folder (1073741841 => 262)
ExceptionId:btpool0-21:1251336256783:def397f7ea3f7cd5
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:253)
at com.zimbra.cs.db.DbOfflineMailbox.renumberItemManu al(DbOfflineMailbox.java:148)
at com.zimbra.cs.db.DbOfflineMailbox.renumberItem(DbO fflineMailbox.java:43)
at com.zimbra.cs.mailbox.OfflineMailbox.renumberItem( OfflineMailbox.java:342)
at com.zimbra.cs.mailbox.OfflineMailbox.renumberItem( OfflineMailbox.java:303)
at com.zimbra.cs.mailbox.DeltaSync.resolveFolderConfl icts(DeltaSync.java:560)
at com.zimbra.cs.mailbox.DeltaSync.syncFolder(DeltaSy nc.java:477)
at com.zimbra.cs.mailbox.DeltaSync.syncContainer(Delt aSync.java:404)
at com.zimbra.cs.mailbox.DeltaSync.deltaSync(DeltaSyn c.java:222)
at com.zimbra.cs.mailbox.DeltaSync.sync(DeltaSync.jav a:92)
at com.zimbra.cs.mailbox.DeltaSync.sync(DeltaSync.jav a:76)
at com.zimbra.cs.mailbox.MailboxSync.sync(MailboxSync .java:188)
at com.zimbra.cs.mailbox.OfflineMailbox.sync(OfflineM ailbox.java:140)
at com.zimbra.cs.service.offline.OfflineSync.handle(O fflineSync.java:47)
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:275)
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 'PK_MAIL_ITEM' defined on 'MAIL_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.DbOfflineMailbox.renumberItemManu al(DbOfflineMailbox.java:66)
... 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 'PK_MAIL_ITEM' defined on 'MAIL_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.doI nsert(Unknown Source)
at org.apache.derby.impl.sql.execute.IndexChanger.ins ert(Unknown Source)
at org.apache.derby.impl.sql.execute.IndexSetChanger. insert(Unknown Source)
at org.apache.derby.impl.sql.execute.RowChangerImpl.i nsertRow(Unknown Source)
at org.apache.derby.impl.sql.execute.InsertResultSet. normalInsertCore(Unknown Source)
at org.apache.derby.impl.sql.execute.InsertResultSet. open(Unknown Source)
at org.apache.derby.impl.sql.GenericPreparedStatement .execute(Unknown Source)
... 43 more
2009-08-27 13:24:16,807 DEBUG [btpool0-21] [mid=2;] offline - ============================== SYNC DEBUG TRACE END ================================