I have a 5G iPod and sometimes when I go to power it on I cannot by just pressing the play/pause butten. Instead, I have to press all the buttons and the black screen with the silver "Apple" in the middle appears. This takes about 10 sec. and it is very annoying. What is causing this problem and is there any way to fix it. Thanks. By the way I have already done the first round of iPod undates, but not the newest ones.