LPC2129 UART ISR Problem

I'm using the LPC2129 and Keil Tools. The purpose of the code is to interrupt on the receipt of a single byte of data and assign "data" to its value. The interrupt seems to work however "data" isn't the right value. Please help, Thanks.

#include <stdio.h> /* prototype declarations for I/O functions */
#include <lpc21xx.h> /* LPC21xx definitions */

void U1ISR(void) __irq; //Declare UART1 IRQ ISR

int data;

int main (void) {

PINSEL0 = 0x0005800A; // Enable UART1

U1LCR = 0x83; /* 8 bits, no Parity, 1 Stop bit */
U1DLL = 8; /* 115200 Baud Rate @ 15MHz VPB Clock */
U1LCR = 0x03; /* DLAB = 0 */
U1IER = 0x1; //Enable the RDA interrupt

VICVectAddr0 = (unsigned long)U1ISR; //Set UART1 ISR Vector Address
VICVectCntl0 = 0x20 | 7; //Enable Slot, Set Channel 7
VICIntEnable = 0x80; //Enable Int UART1

blah ... blah ... blah

while (1) {

yada ... yada ... yada

}

}

void U1ISR(void) __irq {

U1IIR |= 0x01; /* Clear Interrupt */

data = U1RBR;

VICVectAddr = 0x0; /* return from interrupt */

}