How fast could the event horizon in a black-hole be traveling?

You got a problem with yor question making it invalid...  The event horizon isnt a "thing" its a region.  In this region in the exact infitesimal surface we call the event horizon, there is light being hung in place.  This is because the event horizon is the exact region in which the velocity needed to escape is eqaul to that of light.  So to answer your question no, it doesnt.  Because the event horizon is not moving at all, because its nothing to begin with, its a region, as i stated earlier

1) The event horizon of a black hole is not a
physical object. It is simply a place in space,
the way an orbit is a position. It is the point
beyond which anyone outside the black hole
can see what's going on inside it. In other words, a literal horizon.
Since it's not a physical object, it is not limited to the speed of light velocity restriction. I would expect, however, that during the formation of the singularity, the position of the event horizon probably does travel faster than light.
2) The only time the position of the event horizon would change would be during the initial formation of the black hole, when the singularity first formed, and also if the black hole got larger due to mass increase.

The event horizon of a black hole is a region located at a certain radius of the black hole's singularity. That radius is determined by the black hole's mass. It doesn't really travel at all. It may expand outward very slowly as the black hole gains mass (for example, by drawing off matter from a nearby star), but it will never move very quickly.

Black holes are a prediction of Einsteins' Relativity. As such, they are hardly likely to defy those same laws that imply their existence.

Relativity describes an entirely internally consistent picture of black hole physics.

If a black hole could exist the event horizon would be a theoretical entity that would define a certain gravitational force.
  It would have no speed and it would have to be perfectly spherical.
  The quantum effect would mandate that it could be no thicker than about one-tenth of a mm.
  Since all the mass would be concentrated at the center anything that penetrated the surface would have to exceed the speed of light,which is not possible.
  That is the orbital velocity below the surface would exceed the speed of light.
  These things make a black hole a nonviable entity.

Ok everybody here is wrong.

Alright, first off, the event horizon does not have to be perfectly spherical, in the case of a rotating (Kerr) black hole, the event horizon will bulge at the middle.

As for the speed it's traveling, you really didn't phrase your question well at all, you clearly aren't well versed in these things. But anyway, from an outside view, anytime matter falls into the black hole, its event horizon expands, so it is moving in that it gets bigger, the fastest it can advance into more area is the speed of light.

As for within the event horizon, we really cannot say anything as relativity breaks down when curvature of space-time becomes infinite (the event horizon surrounds the region where this happens), so we have no theory about what happens beyond baseless speculation.