User Profile

Hi, I have witnessed a situation where location updates are generated via the device far too frequently according to the CLLocatonManager settings used. There have been sporadic instances where a location update is generated by the device every 0.01 seconds for a period of seconds resulting in hundreds of updates being transmitted from the device. The app starts background location updates using startUpdatingLocation() with a distance filter set to 20m. I can see some of the lat/long co-ords generated for each location update are identical so it appears that the distance filter isn't working correctly. This is sporadic though and it appears the the device will return to correct operation after a few seconds but also after hundreds of location updates have been generated. Has anyone else witnessed this behaviour and understands the cause? Appreciate any guidance as to how to remedy.