AS3 Number Constructor Bug?

[mr_malee]

someone please tell me what the hell is going on here, the Number type is the only one that fails here:

in a new fla add these line:

var test2:Test2 = new Test2();
var test1:Test1 = new Test1();

Test1.as

package {
	
	public class Test1 {
		
		protected var var1:String;
		protected var var2:Number;
		protected var var3:int;
		protected var var4:uint;
		protected var var5:Boolean;
		
		public function Test1(){
			
			trace("TEST 1 CONSTRUCTOR", var1, var2, var3, var4, var5);
		}
	}
}

Test2.as

package {
	
	public class Test2 extends Test1 {
		
		public function Test2(){
			
			var1 = "hello";
			var2 = 10;
			var3 = 5;
			var4 = 15;
			var5 = true;
			
			trace("TEST 2 CONSTRUCTOR", var1, var2, var3, var4, var5);
			
			super();
		}
	}
}

traces out:

TEST 2 CONSTRUCTOR hello 10 5 15 true
TEST 1 CONSTRUCTOR hello NaN 5 15 true
TEST 1 CONSTRUCTOR null NaN 0 0 false


????????

why is Number the only one coming back as NaN. And funnily enough its the number type I need, figures.