I wanted to change my SS but didn't as I was worried about my warranty. I emailed Amz to ask if they still honoured the warranty as they did with the kindle 2 ss hack, but they replied that it would void the warranty as you are breaking the ToS where you agree not to change the software, that was enough to stop me......real shame as I hate those screensavers
Hope you get a new one with no trouble, good luck and thanks for the warning.