System Notes status saying Rev Commit Pending Committed instead of completed

I have 2 sales orders which went through the same process but has got different order in the System Notes.
Should I be concerned about?

[SIZE="1"]
9/3/2011 2:53 PM  Billy Change Rev. Commit. Status Pending Commitment Committed
9/3/2011 2:53 PM  Billy Change Revenue Status In Progress Completed
9/3/2011 2:53 PM  Billy Change Revenue Status Pending In Progress
9/3/2011 2:53 PM  Billy Change Document Status Pending Billing Billed
9/3/2011 1:16 PM  Warehouse2 Change Document Status Pending Fulfillment Pending Billing
9/3/2011 11:41 AM  McPhee, Store Change Printed Picking Ticket F T
9/3/2011 10:51 AM  Billy Change Document Status Pending Approval Pending Fulfillment
9/3/2011 10:50 AM  Billy Set Revenue Status   Pending
9/3/2011 10:50 AM  Billy Set Rev. Commit. Status   Pending Commitment


Why after the sales order has been billed and completed are we getting these other system notes that show “Pending Commitment” and then “Committed”.  This order has been completely fulfilled and billed, so what is left to be committed???