Hi,
I am seeing a persistent window pop-up telling me that there are 3 additions and 5 deletions. So I dug into the log and find this very strange entry... I restarted and also used the 'Sync Now' button to attempt a full sync but still no go. Any ideas on how to fix this? I have myself and another user with a very similar problem. It all seems to have started as of the 10.5 upgrade of Mac OS.

PrefPane v4.5.1450
MacOS 10.5.1

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[Thu Jan 10 23:22:13 200] Caught exception while trying to sync contacts: name = NSInvalidArgumentException, reason = [ISyncConcreteSession clientAcceptedChangesForRecordWithIdentifier:forma ttedRecord:newRecordIdentifier:]: I don't know anything about a record with identifier BE884254-47FE-47DC-BBF5-875AD4C7CBB9. Are you sure you got it from this session or from the session's snapshot? If so, perhaps it has been deleted? (131)
[Thu Jan 10 23:22:13 200] cancelling sync (131)
[Thu Jan 10 23:22:13 200] [assert] error: !err
[assert] where: "ZimbraHelper_main.mm", "Sync", line: 2471
(131)
[Thu Jan 10 23:22:13 200] Caught exception while trying to sync calendars: name = ISyncSessionUnavailableException, reason = Client com.zimbra.18a641d8647b5-2097bb44-6ea7fb7e-4a5ddfe is already participating in a sync (131)
[Thu Jan 10 23:22:13 200] cancelling sync (131)
[Thu Jan 10 23:22:13 200] [assert] error: !err
[assert] where: "ZimbraHelper_main.mm", "Sync", line: 2490
(131)