MBP LCD flickering problem

[ihji]

Hi, I wonder whether my unit is normal or faulty.
I have 2011 MBP 15 inches Hi-res AG and the following site has 12 Inversion tests. My results are:

http://www.techmind.org/lcd/

* Pixel dot-inversion: little flickering
* RGB sub-pixel dot-inversion: very little flickering
* Line-paired pixel dot-inversion: not flickering at all
* Line-paired pixel dot-inversion (offset): severely flickering
* Line-paired RGB sub-pixel dot-inversion: not flickering at all
* Line-paired RGB sub-pixel dot-inversion (offset): very severely flickering

* Row-inversion (also known as line-inversion): little flickering
* Line-paired row-inversion: not flickering at all
* Line-paired row-inversion (offset): not flickering at all

* Dot-inversion (green test): little flickering
* Line-paired dot-inversion (green test): not flickering at all
* Line-paired dot-inversion (green test) (offset): very severely flickering

7 out of 10 are flickering. The flickering is nearly unnoticeable for most natural images. Additionally, my LCD is also flickering here: http://www.csse.uwa.edu.au/~lucas/background.html

Should I bring my MBP to Apple service? What are your results?