Lpc2000

Hi, 
I had an application running a uart at 155200 on LPC2148, debugging as
normal with Jlink. Then I find the link quit, and I tracked it down to
the Uart now running at 9600 even though I tell it to run at 155200.
Setting the other end to 9600, the application works again, but I
don't want that baud.
Has anyone else run into this? I have a feeling it is the PLL messing
up. I had similar problems long ago, where I had nonstandard bauds
coming out and had to erase the part with the Philips utility.  I'll
try that to see if I get it back, but what happened?  Will it happen
again?
Thanks,
Steve