I bought a ViewSonic VP171b about 4 years ago and it has worked great, but I've been having a problem with it as of late. When I bought the display it didn't have any dead or stuck pixels but now they are starting to form. But the thing is they aren't really "stuck". There are about 20 of them on the dispaly and they only appear in dark backgrounds. They will flash on and off when I scroll the screen. For example, I have about 12 in a straight veritical line on the left side of my screen right now. When I scroll the page down some of them will disappear and when I scroll back up they all appear again. Is it normal for this to happen to an LCD display? Is there a way to fix it?? Thanks for the help!