Zimbra version 4.0.2

When attempting to open a newly arrived email via Kmail using IMAP I receive:

Error while uploading status of messages to server:
Cannot Write to Resource

This means that although the resource, Changing the flags of message imap://user@susevm.domain.com:143/INBOX/;UID=259 failed., was able to be opened, an error occurred while writing to the resource.

Details of the request:

URL: (unknown)
Date and time: Tuesday 03 October 2006 17:52
Additional information: Changing the flags of message imap://user@susevm.domain.com:143/INBOX/;UID=259 failed.

Possible causes:

You may not have permissions to write to the resource.
There may have been a problem with your network connection.
Although unlikely, a hardware error may have occurred.
Possible solutions:
Check your access permissions on this resource.
Check your network connection status.
Contact your appropriate computer support system, whether the system administrator, or technical support group for further assistance.



Reversely, in trying to set a message as 'Mark as Unread' from inside Kmail while connected via IMAP. I receive the same error error:

I am able to move or delete the email.