Hi again DDM.
That would be a fair point (and I agree with pinkunicorn in that I often forget to add a FP until after I submit my online log), so I went back and checked the e-mail from GC and in this particular case the e-mail shows that the finder did award a FP at the time of logging.
I did not check my stats yesterday (Sat) but just to update you that my stats are now (Sun) showing the correct figure of 149 so it has obviously caught up in the last 24 hours or so.
Having been a software Beta tester before, unfortunately not checking my stats yesterday means I inadvertently added another variable to the mix so I cannot be sure whether NOT checking stats for a period in excess of 24 hrs makes any difference, or whether the FP would have been found regardless in this instance.
So whilst I'm happy that it has caught up, in my mind I haven't completely isolated the causes of the initial delays.
Next time I get awarded a FP (as notified by GC) I may have to conduct a couple of experiments around accessing my PGC stats to see if I can't narrow down the circumstances which cause the delay...watch this space.
Thanks for all your replies (both of you), and keep up the good work :)