Backup exec errors on Exchange

According to Symantec, errors in the Exchange 2010 eventlog
"Cmdlet failed. Cmdlet Get-MailboxDatabaseCopyStatus, parameters {Identity=Public Folders\*, Active=True}." or  "Cmdlet failed. Cmdlet Get-Mailbox, parameters {Database=Public Folders, ResultSize=unlimited}." and so on, can be ignored - http://www.symantec.com/docs/TECH169638