I'm new to APM Arduplane but managed to get it flying perfectly (been working with quads etc. for more than 2 years now) but one thing still keeps me away from being fully satisfied with this nice autopilot.
That is the *.gpx logs don't contain valid timestamps e.g. <time>2013-07-22T00:00:00+02:00</time> everything else like position etc. is fine. I have a ublox neo6m GPS unit and uploaded the apm config file from 3DR. I use the arduflyer apm from rctimer if that helps...
In the attachments are the GPS-config and a sample gpx log.
You get these gpx logs by selecting the terminal in MP, then log download and dump any log you want. It will give you three files. One *.kmz, a *.log and a *.gpx .
Any suggestions are welcome ;)