Sorted:

C# Program Optimisation-Collection of common programming errors

problem about asymptotic-complexity-Collection of common programming errors

Problem assigning a SqlParameter-Collection of common programming errors

how to find and fix the cause of the crash-Collection of common programming errors

Programming to an interface. How to decide where its needed?-Collection of common programming errors

In OCaml, how big is the price of abstraction (i.e. polymorphic functions)-Collection of common programming errors

Ant <input/> no longer working in Eclipse Helios (3.6)-Collection of common programming errors

WCF: MessageContract, DataContract … Confused?-Collection of common programming errors

problem about code-smell-Collection of common programming errors

About warp and threads-Collection of common programming errors