Ok - I have uninstalled and reinstalled - same issue.
I did find this in the install directory after installation was complete:
log4j:WARN No appenders could be found for logger (org.apache.commons.httpclient.HttpClient).
log4j:WARN Please initialize the log4j system properly.
and I see this in the log files:
2007-10-25 09:34:22,125 DEBUG [Timer-Offline-Main] [] offline - resuming initial sync
2007-10-25 09:34:22,250 DEBUG [Timer-Offline-Main] [] offline - delta: updated folder (11): ROOT
2007-10-25 09:34:22,359 DEBUG [Timer-Offline-Main] [] offline - delta: updated folder (1): USER_ROOT
2007-10-25 09:34:22,484 DEBUG [Timer-Offline-Main] [] offline - delta: updated folder (2): Inbox
2007-10-25 09:34:22,484 ERROR [Timer-Offline-Main] [] offline - unexpected exception during sync for account
edunn@adpt-tech.com
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at java.lang.String.substring(Unknown Source)
at com.zimbra.cs.account.offline.OfflineAccount$Versi on.<init>(OfflineAccount.java:58)
at com.zimbra.cs.account.offline.OfflineAccount.getRe moteServerVersion(OfflineAccount.java:85)
at com.zimbra.cs.mailbox.OfflineMailbox.getRemoteServ erVersion(OfflineMailbox.java:756)
at com.zimbra.cs.mailbox.InitialSync.syncMessagelikeI tems(InitialSync.java:316)
at com.zimbra.cs.mailbox.InitialSync.initialFolderSyn c(InitialSync.java:233)
at com.zimbra.cs.mailbox.InitialSync.prioritySync(Ini tialSync.java:283)
at com.zimbra.cs.mailbox.InitialSync.initialFolderSyn c(InitialSync.java:261)
at com.zimbra.cs.mailbox.InitialSync.initialFolderSyn c(InitialSync.java:272)
at com.zimbra.cs.mailbox.InitialSync.resume(InitialSy nc.java:175)
at com.zimbra.cs.mailbox.InitialSync.resume(InitialSy nc.java:163)
at com.zimbra.cs.mailbox.OfflineMailboxManager$SyncTa sk.sync(OfflineMailboxManager.java:128)
at com.zimbra.cs.mailbox.OfflineMailboxManager$SyncTa sk.run(OfflineMailboxManager.java:98)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)