I've been using presenter's view in PowerPoint for a long time without any
problems.  But suddenly I'm getting quirky results with the presenter's
notes.  Sometimes they work fine.  Then for no obvious reason, the notes will
get stuck at a particular slide, while the presentation continues as normal.  
Slides on the presenters view continue to be synchronized with the those
visable by the public.

It started with just a 1-2 slide lag, then back to notes appearing normally.
I thought it was just a slide that had no notes, so kept the prior note up.  
But today I tried to give a presentation and after 5 slides the notes "stuck"
for the remainder of the presentation.  There definitely are notes on the
remaining slides.

This was an existing presentation that worked correctly last time it was
used.  No changes have been made to it since last usage.  Some of the slides
use animation (nothing fancy - each bullet appearing as I am ready to talk
about it), others do not. If I copy/paste the slide to another spot, same
thing happens.  If I create a new slide, then copy/paste images, text, and
notes to it, the notes work fine.  That's obviously a workaround, but not a
good one as it means recreating many, many slides.  And no idea which of my
presentations will develop the problem next.

Running PowerPoint 2003 under Windows XP SP2, all fully patched.

Any help about what is causing the problem, and/or how to correct it will be
greatly appreciated

Amanda