I would take a look at the windows calculation that is on the change window to check that out and also possible turn on calculation diagnostics. I think LANDESK support don't strictly speaking support calculations, however if you haven't changed the OOTB design on change, then I think you could raise a support call as it was LANDESK that created the calculation that does this bit. If you have changed it, then perhaps look at the modifications made for clues.
Thanks dmshimself. I think I will get in touch with support as I have not made any changes to calculations nor configured this one.
Many thanks for you feedback!