You've downloaded the latest, coolest utility (for example, ZoneStripper) :) with source code. The source code is sitting on your local hard drive yet when you launch the solution in Visual Studio .NET 2003, you receive the warning:

The project location is not fully trusted by the .NET runtime. This is usually because it is either a network share or mapped to a network share not on the local machine. If the output path is under the project location, your code will not execute as fully trusted and you may receive unexpected security exceptions.

Your first thought is probably "What the heck? The solution is on my local drive!" What is causing this odd behaviour, you wonder? It's Windows XP SP2 and Zone Identifiers. ZoneStripper will remove those annoying Zone Identifiers from your downloaded files. Hopefully someone other than myself finds this little utility useful. Enjoy!