Lpc2000

I've a program running interrupts on both UART0 and UART1 as well as a
Match timer interrupt. All interrupts are routed through the VIC with
Timer0 having slot 0, uart0 and uart1 having slot 1 and 2
respectively. When my application starts getting busy with lots of
activity on uart 1 and uart 0, it hangs. The interrupts continue to
work flawlessly. You can even trace through them in IAR. However every
single time I break, I'm in an interrupt handler. Occasionally I'm in
the low level program startup code. Does anyone have any idea what
would cause this behavior.

Also I had a question about resetting the Vic. I'm doing
VicVectorAddres s = 0. I've seen people setting it to 0xff. Which one
is correct?

Thanks!