I'd heard on the Geosphere Forums that your customer support was second to none and now I know the rumours are true!!
I hadn't properly connected the Location icon with the GPS as I was under the impression that Location came from multiple sources (incl internet routers, wifi & GPS). If it's that clearcut, then you've just locked me onto another important tool for managing battery performance in the field.
Thanks also for the Airplane Mode tip - hadn't hooked into that one either!!
Think I'll go back to the Geosphere Forum now and see if I can drum up some more customers for you - you deserve them