Picked this up on /. today. It seems that due to the impending war the U.S. has made plans for increasing the inaccuracies on the civilian C/A code, which would degrading public GPS accuracy to 100 meters. All in hopes to cripple Iraqi forces.
you can find the original article here: http://www.spacedaily.com/2003/030318154133.7p1uva5u.html