One owner found the same furniture leg trap with the VR7000 as previously seen on the older VR9000. A "wheelie" under drive torque tilts up the side triggering the sensor for shutting down when lifting off the floor, before any maneuver is made in response to the bumper. Easily fixed with a little cardboard in the wheel well to limit the tilt. http://www.robotreviews.com/chat/viewtopic.php?p=138691#p138691
It can take a number of runs before a furniture leg gets bumped in just the right way to get trapped, so hard to detect immediately.
This is similar to an addition I made to Neato robots for flipping up the back too much, though they do not shut down like the Samsung, with software differences.
Robots are just not designed as thoroughly as they should be. Nice additions are made such as the intake shutter and smartphone apps, while old details are ignored.
C'est la vie.