Are the calculation algoritms updated lately?
I regularly post sessions by uploading .gpx files of my Suunto Ambit2S tracks, using the upload facility on the website. Since the last 2 weeks the, by GP3S, calculated speeds and distances differ largely from the readings I get in my movescount account. I have checked my .gpx-files using GPSResults and can't find anomalies in the .gpx-files.
Speeds are calculated at approx. at 70%, but distance is calculated at approx. 120% of the tracklength.