[Sharlin]

Yes, this is a complete non-event, probably a radiation artifact in the sensor. The following photos were taken at the same time by the left and right navigation camera, respectively, and only the latter shows the bright spot.

http://mars.jpl.nasa.gov/msl/multimedia/raw/?rawid=NLB_44979...

http://mars.jpl.nasa.gov/msl/multimedia/raw/?rawid=NRB_44979...

Images digged up by redditor CurtisLeow at http://www.reddit.com/r/space/comments/22g13b/rover_captures...