I've heard that as well, however if it is on there it is well hidden. I haven't been able to detect it on my system.
And on that note, the turn after my soldier ended up with 10vps of bleeding damage, my other soldier was hit in the face and blinded for 5 turns. <_< He regained his vision in time to burst fire at a cluster of 4 soldiers that were sneaking up on him while he was blinded. He couldn't see, but he could hear them coming. Managed to kill 3 of the 4 with his burst. "