Strange problem on Pasting (CKEditor doesn't like GPS!)

I am using Drupal 7 + WYSIWYG 7.x-2.1 + CKEDITOR 3.6.1, all latest version on official site
I found that when I paste the following text into CKEditor:

Global Positioning System (GPS)

It will not be able to save in drupal!!!! I can paste many other things into the editor and save without problem.
I have tried with paste from word, paste as plain text and Ctrl-V, all failed... When I click preview or save, the text will not be saved or displayed again. It will just return to the same editing page. One more weird thing is that if you Type this in, it will be able to save.

The original text is below:
Planned Satellite-Duo feature allows seamless fusion of location data from the United States Global Positioning System (GPS) and the Chinese BeiDou(COMPASS) Navigation Satellite System.

When I delete the term Global Positioning System (GPS) , it can save and preview...

Here is the whole process
Using IE8, IE9, Chrome, Firefox, Sarari, just any browser
Go to http://www.domain.com/admin/content
FInd a page you want to edit, and click Edit
Copy the sentence from my attached txt document or just copy this ->>> Global Positioning System (GPS)
Paste onto CKEditor through WYSIWYG module using Full HTML or Filtered HTML (with either Ctrl+V or paste from word or paste as text)
Then click save.
You will be redirected back to the same page with the added content disappeared.

I have tried using TinyMCE too, the same problem happened and I believe this is not a unique bug of using CKEditor.

Anyone can reproduce this error?