I just found that some white dots at lower right corner, low left corner and upper right corner on the T4210 screen under the screen protector (3M) today. I thought it was some dust. I removed the screen protector and found that they could not be removed by water no matter how hard I tried. I really don't think it is dust (very sure). It seems the screen is losing the coating on the top. Do you see the same thing on the screen (some tiny white dots under the screen protector)? When I first got the tablet, I immediately applied the screen protector and never touched the screen directly. I am not sure how this happens! I did not pay I lot of attention to the screen so don't know if I got the white dots on the screen when it was new. I really doubt there were tiny white dots on the screen when it was new.