<span style="font-family: arial,helvetica,sans-serif; color: rgb(0, 0, 153);">URLs for a few articles, all with more or less the same content, that you may find interesting.</span><br><br><a href="http://science.slashdot.org/story/09/06/18/034230/Satellite-Glitch-Rekindles-GPS-Concerns">http://science.slashdot.org/story/09/06/18/034230/Satellite-Glitch-Rekindles-GPS-Concerns</a><br>
<br><a href="http://www.networkworld.com/community/node/42767">http://www.networkworld.com/community/node/42767</a><br><br><a href="http://www.insidegnss.com/node/1573">http://www.insidegnss.com/node/1573</a><br><br><span style="font-family: arial,helvetica,sans-serif; color: rgb(0, 0, 153);">...and the last one may require an account:</span><br>
<a href="http://online.wsj.com/article/SB124520702464422059.html">http://online.wsj.com/article/SB124520702464422059.html</a><br>