It's happened 4 times now, after the fourth time, I took it back to the Trek store, and the guy reset it for me, since then, I've had no issues with inaccurate readings, that was about a month ago.

But about 2 weeks ago, I went to put the Trip 300 on my handlebar, and the rubber strap broke, the guy at the LBS gave me a new one, but that could potentially be another problem down the line.