Server crashing due to crazy origin/crazy physics.

Hey, I run a small Sandbox server with about ten slots. After crashing so much, I decided to enable -condebug to see what was going on. Before every crash, I noticed this -

Crazy origin on entity [871][prop_physics]
	Origin:           [1299.834351, -2372.919922, -16384.183594]
	Angles:           [-0.369929, 111.475739, 2.439234]
	Velocity:         [10.140821, -7.177834, -29.903036]
	Angular Velocity: [-103.755516, 268.853699, 2.230356]

Or something along the lines of that. Any reason why it’s doing this, and how I fix it?

My host is