iPad 2 - Lines on screen when waking up quick?

It is NOT normal for the pad to do this. Take it to an apple store and get it replaced.

I had this issue (http://www.youtube.com/watch?v=XVxcQTvicRo) I got it replaced for that issue, and for light bleeding. My current one doesn't always do it. But get it replaced, a new iPad who could complain! Also, the iPad that did that used to crash and randomly reboot. So get it replaced.

One of the two I bought had this issue, with an Apple store just a few miles from home, I took it back, they replaced it. You just can't beat the fair and friendly store employees.

Yeah this is not normal I haven't got it on mine but what I would say is if you can deal with it then just keep it as you say you don't have any backlight bleeding and if you swap it then you may end up with an iPad with a worse issue than what you have now.

How often are you going to keep waking your iPad up quickly anyway?

I have this in my current brown box DLXFW, I do have to replace again for a color shift issue, but, some apple engineers told me it's normal for the lines to happen, and I have seen your screen on the backlight bleeding thread, it's the best I have seen. DO NOT REPLACE FOR THIS ISSUE (if there is a different issue, then that's a different story)