One of our programmers reviewed the log and said it seems that multiple people seem to be running reports or even same report as per log. If these are 'heavy' reports or customised then this is likely the cause.
More explanation @Paul:
When the issue occurs, should see if restarting presence or lookup helps. If so - that is the issue and should be sorted. First need to ensure that that is the issue...
Hello!
You can mark it as closed as option. If document is connected with other documents you can not delete it so you will not be able to delete PO, as you will not be able to remove Goods receipt...