My screen is experiencing this issue. It doesn't really bother me much but I can see where people would find this to be a very big issue, especially if you produce graphics on your PB.
This link will tell you if your screen is or isn't experiencing this.
http://crankycat.com/pb15_problems.png
From what I've read I'd be surprised to hear from someone who isn't.
This link has some more good info and pics of the problem.
http://15inpbscreen.appleplace.com/
I wanted to post this and see if anyone isn't having this anomoly with their new high rez PB.
This link will tell you if your screen is or isn't experiencing this.
http://crankycat.com/pb15_problems.png
From what I've read I'd be surprised to hear from someone who isn't.
This link has some more good info and pics of the problem.
http://15inpbscreen.appleplace.com/
I wanted to post this and see if anyone isn't having this anomoly with their new high rez PB.