Enterprise Vault - Pending Item in journal mailbox accumulation

Hi People,

I wonder if my EVJournal archiving is working or not ? because at the moment I can see emails with pending item dated back to 2009, when I opened that email, it got grey bar "This item is being archived by Enterprise Vault, Do not copy, move or delete this item" ?

I assume that the fully working EVJournal archiving task should only left the Exchange Journal mailbox with unread emails not archived since the last successful archiving task.

Any help and assistance would be greatly appreciated.

Thanks