Maybe all your kit panicked due to the proximity of the only race on earth tighter than a Tyke!
Fly up there all the time doing survey work and the GPS has never showed a problem yet. At least I presume not. The gaffer uses it, not me, so it's barely visible from my position. I prefer the foldy up plastic picture thingy with all the pretty colours and patterns on it - it helps pass the time trying to match it to the bumps and squiggles on the ground.
