Yesterday I received my ZAGG invisible shield for my 2nd gen ipod touch. Before the installation, i cleaned my ipod from all dust and finger prints. The screen had no scratches on it and the back had a few light scratches. After installing the invisible shield, i noticed a long straight horizontal scratch 3/4 along the screen. I have no idea how this happened and i'm not sure what it is, or if it's a scratch on the screen or invisible shield. I'd be glad to hear if anyone has any ideas. Thanks.