Sorted:

problem about superclass-Collection of common programming errors

Java Generics: What is PECS?-Collection of common programming errors

problem about method-hiding-Collection of common programming errors

UITableView Scrolling crashes(segmentation Fault 11) only when tested via instruments tool-Collection of common programming errors

Need a design advice to skip object type casting-Collection of common programming errors

Why don't non-existent IBOutlets crash the application?-Collection of common programming errors

Is this true about late binding?-Collection of common programming errors

presentModalViewControllerAnimated: gives white screen-Collection of common programming errors

problem about access-modifiers-Collection of common programming errors

TinyMCE (Image Manager): How to force client to upload via “basic upload”-Collection of common programming errors