I'm developing an iOS 4 application using iOS SDK latest version and XCode 4.2. I have a XIB with a UIWebView with Alpha = 1.0, Background set to Clear Color and Opaque is not set. On this XIB I setup an image as background with this code: - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self)