I've been concerned about the alarming story of newer Pyrex breakage so I did some more in-depth research. Here's what I found:
In 2000, Corning Consumer Products division changed its name to World Kitchen, Inc. and can be found online at http://www.worldkitchen.com They have FAQs at: http://www.pyrexware.com/index.asp?pageId=30
They state that they have used the same soda lime glass for the past 60 years at the same factory in Pennsylvania. It isn't anything new. They DO give tips for how to prevent their products from shattering due to thermal shock, so please review them for your own safety. They go beyond anything else we've seen about protecting ourselves from what can be a horrifying situation with four simple rules. There are a couple that I've been breaking and I will change my ways immediately! (No metal trivets...... really? I've cooled my bread that way for 50 years!) I'd paste them in here, but Blogger won't let me paste, so go see it all for yourself. Some may surprise you as much as they did me!
We all love our Pyrex (and I love my Corningware products just as much!) and want to protect it and ourselves. I shudder to think of a piece shattering with a child in the kitchen, so please, follow their advice for staying safe and enjoying your beautiful Pyrex.