Strange problem with potput signals

Hi 

Im testing my msp430fg439 with a simple code. In my design I require to
use Pins on port 3 from  Pin 0 to  Pin 3 for the peripheral functions, in
this case the SPI interface, and pin 4 to pin 7 like for the I/O
functions.
After a couple of tests and no signal on pins 7,6,5,0 I decided to use
just a simple code (see below) just to test the msp pins.
I loaded and executed the software and I got no signals. I thought the msp
was not working , so I replaced with a new one and ... still no signals.
Could somebody help me to see what is the "basic" or simple mistake that
Im doing.
With this code I only got signals on pins 4,3,2,1.
I am using mspgcc with Ubuntu.

Thanks 

(This is a simple code that changes the outpput of pin 3 in a
MSP430FG439)


#include <msp430x43x.h>
#include <io.h>


            /* prototype for wait()      */

int main()
{ 
WDTCTL=WDTPW + WDTHOLD;

  
   /* main function, called by startup-code */
   P3SEL=0xF0;
   

   P3DIR= 0xFF;
   
  while (1){
  
  P3OUT=0xFF;
  P3OUT=0x00;
  
  
   P3OUT=0xAA;
   P3OUT=0x00;
  
   P3OUT=0xA1;
   P3OUT=0x00;

   P3OUT=0xA2;
   P3OUT=0x00;


   P3OUT=0xA3;
   P3OUT=0x00;
  
   P3OUT=0xA4;
   P3OUT=0x00;

   P3OUT=0xB5;
   P3OUT=0x00;

  P3OUT=0xB6;
   P3OUT=0x00;
  
   P3OUT=0xB7;
   P3OUT=0x00;

   P3OUT=0xB8;
   P3OUT=0x00;


  P3OUT=0xB9;
   P3OUT=0x00;
  
   P3OUT=0xCC;
   P3OUT=0x00;

   P3OUT=0xC1;
   P3OUT=0x00;


  P3OUT=0xC2;
   P3OUT=0x00;
  
   P3OUT=0xC3;
   P3OUT=0x00;

   P3OUT=0xC4;
   P3OUT=0x00;


   P3OUT=0xC5;
   P3OUT=0x00;
  
   P3OUT=0xD6;
   P3OUT=0x00;

   P3OUT=0xD7;
   P3OUT=0x00;


   P3OUT=0xD8;
   P3OUT=0x00;
  
   P3OUT=0xD9;
   P3OUT=0x00;

   P3OUT=0xEE;
   P3OUT=0x00;

   
}

}