I've noticed that when recording track logs using the GPS on my F90, the timestamps on the track break when your log spans midnight (GMT time). For example if my F90 is recording a log and the latest point on the track is timestamped Nov 16th 23:59:59, then you would expect the next one to be Nov 17th 00:00:00. For some reason it just rolls back to midnight on the SAME day, so Nov 16th 00:00:00. This causes some major problems when you try to import the logs into any mapping tools, since it plots the segments in the wrong order, with straight lines "as the crow files" between random points on your path.
To fix this you have to manually open the affected file and use some GPX tools to shift the timestamps forward 24 hours.
Am I the only person using this feature, or is anyone else experiencing this?