Compiler Help Needed

[Darkman_X000]

Ok guys, what is the deal!? I am getting the following errors when I compile:

OUTPUT
MPLINK 3.40, Linker
Copyright (c) 2003 Microchip Technology Inc.
Error - symbol 'axelWidth' has multiple definitions.
Errors    : 1

BUILD FAILED: Sat Feb 07 11:04:01 2004

This is really annoying because it does not tell me where the other definitions are. In C++, and in this compiler, if I define the same thing twice explicitly, it tells me where the previous definition is. Here is a sample of my code:

UserUtilities.h
#ifndef USERUTILITIES_H
#define USERUTILITIES_H

#include "bool.h"

float axelWidth=.725;
float wheelRadius=.105;
int clicksPerRevolution=16;

bool newValue(int *staticVar, int dynamicVar);
float thetaDegrees(int c);
float thetaRadians(int c);
float Forward(int c);

#endif

UserUtilities.c
#ifndef USERUTILITIES_C
#define USERUTILITIES_C

#include "bool.h"
#include "UserUtilities.h"

bool newValue(int *staticVar, int dynamicVar)
{
	
	if (*staticVar==dynamicVar)
	{
		*staticVar=dynamicVar;
		return true;
	}
	else
	{	
		return false;
	}
}

float thetaDegrees(int clicks)
{
	extern float axelWidth;
	extern float wheelRadius;
	clicks*=22.5;
	clicks=clicks*wheelRadius;
	clicks/=(float)axelWidth;
	return clicks; //22.5*(float)wheelRadius*clicks/(float)axelWidth;
}

float thetaRadians(int clicks)
{
	extern float axelWidth;
	extern float wheelRadius;
	clicks*=3.1415926;
	clicks=clicks*wheelRadius;
	clicks/=8*axelWidth;
	return clicks;
}

#endif

Note: these are the only files that contain the definitions of these functions and varibles. There are NO duplicate names or any of that.
WHAT IS GOING ON!?!?!?!?!?!?!?!?!?
Clearly, including the file multiple times is prevented by the preprocessor #ifndef, #define, #endif statements, but it is acting like it just disregards those...