I couldn't wait for the postman. I bought a second copy this morning at 9 am.
Currently on pg. 479.
I'll check in when I'm done to let everyone know that I'm spoiler safe. Any ideas on where we can talk about it when we're through so as not to spoil for any people strange enough to wait to read it? (I accidentally spoiled the Half-Blood Prince 2 WEEKS AGO for a self proclaimed Potter fan, so I'm being a lot more careful).