yesterday i upgraded my iphone 3gs to iOS4, all was fine i thought until i wanted to watch the french get knocked out the world cup using the itv world cup 2010 app (england only?) i open the app, it then closes immediately! so i turn off phone, turned it back on then opened the app again, it attempts to open, then it closes after a couple of seconds so i delete the app from the iphone, and also my itunes library. then i re-downloaded it. synced my iphone and then checked the app again and it still WON'T open! so i tried my other apps and the only other one i can see that also closes upon opening is the BatteryDoctor Pro app which i paid for! is anyone else having this problem?