Sorted:

OO design, table design-Collection of common programming errors

Getting the name of a sub-class from within a super-class-Collection of common programming errors

problem about windows-protocols-Collection of common programming errors

Improve code readability without performance loss-Collection of common programming errors

problem about masm-Collection of common programming errors

MonoDevelop Debugger Crashing with no error message, using Dijkstra's algorithm and 2D array-Collection of common programming errors

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