Get-Mailbox and/or Get-MailboxStatistics command throws 'object corrupted error'

Hi,

I want to show the size of my mailboxes, but I receive an error.

Command:

Get-Mailbox -ResultSize Unlimited | Get-MailboxStatistics | Sort-Object TotalItemSize -Descending | Select-Object DisplayName,TotalItemSize -First 20

Result:

WARNING: The object 045010fb-d8d9-41c0-8588-5e72737bb007 has been corrupted, and it's in an inconsistent
state. The following validation errors happened:
WARNING: Cannot extract the property value of 'DeletedItemCount'. Source: PropTag(DeletedMsgCount),
PropType(Int), RawValue(-305), RawValueType(System.Int32). Target: Type(System.Nullable`1[System.UInt32]),
 IsMultiValued(False). Error Details: <n/a>

Does anyone know how to fix?

Regards,
Allan Kjær (my cv | my blog)