I'm also recieving a blue screen on my 4 day old TP.
I was viewing a YouTube video, which appeared to be working fine, until I clicked the maximize button. The video audio continued to play, but the entire screen went blue. I could touch the screen to pause the video, but none of the other video controls were visible (couldn't see minimize, etc).
The screen was still responsive despite not being able to see any of the controls, and it may have been recoverable, but not thinking, I pushed the top button to turn the screen off. When I turned the screen back on, it was responsive to touch but the screen was still blue. To make matters worse, I have a password enabled and I can't see the keys to get past the login. I'm able to guess at where the unlock icon would be, and I can hear the device clicking when I touch where the keyboard would be, but my password too complex for me to find the right keys.
I tried webOS Doctor, but it won't connect properly. I guess it is expecting the device to be frozen. In my case it's not hung, it's just showing a blue screen.
I'm going to try to let the battery run down, then try again. I guess if all else fails I'll call HP.
For those of you who have had your devices replaced, have you seen the issue recurr?