WIN10 64bit, Core2Duo, Radeon HD5700, 5Gb RAM (tested on muliple configs...)
2.79 testbuild to 2.79RC2
Short description of error
Set origin to center of mass gives bad results on simple planes. Running multiple times it converges to the good value?
Exact steps for others to reproduce the error
Create a plane, LMB somewhere else, set origin to 3d cursor and try set origin from center of mass... try this last step multiple times...