Sorted:

Thread safe usage of System.Configuration-Collection of common programming errors

problem about observer-pattern-Collection of common programming errors

Polymorphism or inheritance?-Collection of common programming errors

Dynamic_cast not needing to perform a run-time check?-Collection of common programming errors

RTE: 8012 “The device is not open”-Collection of common programming errors

What are the performance costs of introducing a CLR type (class or interface)? [closed]-Collection of common programming errors

Capturing Audio in QuartzTypeLib?-Collection of common programming errors

App crashes in Instruments only-Collection of common programming errors

problem about jls-Collection of common programming errors

Objective c can not catch exception from calling super method-Collection of common programming errors