[sPlOrYgOn]

I found something...
I wonder when this gets called..
I'll see what I can do when I have time..
this is found in the HLSDK in a file called pm_shared.c

PHP Code:

/*
================
PM_CheckVelocity

See if the player has a bogus velocity value.
================
*/
void PM_CheckVelocity ()
{
    int        i;

//
// bound velocity
//
    for (i=0 ; i<3 ; i++)
    {
        // See if it's bogus.
        if (IS_NAN(pmove->velocity[i]))
        {
            pmove->Con_Printf ("PM  Got a NaN velocity %i\n", i);
            pmove->velocity[i] = 0;
        }
        if (IS_NAN(pmove->origin[i]))
        {
            pmove->Con_Printf ("PM  Got a NaN origin on %i\n", i);
            pmove->origin[i] = 0;
        }

        // Bound it.
        if (pmove->velocity[i] > pmove->movevars->maxvelocity) 
        {
            pmove->Con_DPrintf ("PM  Got a velocity too high on %i\n", i);
            pmove->velocity[i] = pmove->movevars->maxvelocity;
        }
        else if (pmove->velocity[i] < -pmove->movevars->maxvelocity)
        {
            pmove->Con_DPrintf ("PM  Got a velocity too low on %i\n", i);
            pmove->velocity[i] = -pmove->movevars->maxvelocity;
        }
    }
} 


[EDIT]
The code tags really need help...
[/EDIT]