To those who jump to the - it takes too much time to get to the root source of the infection so reformat, oh btw move the data files ,,, That is a shotgun approach which does not yield dependable results. To those who think an O/S reinstall would remedy the infection, it does nothing more than applying a bandaid to an arterial gush.
The author was correct - get to the root of the infection, do not assume it is a standard viral infection, check for spyware invasion, etc.
It is better to figure out the source of the problem so that people can be educated, the cause can be researched and the re-infection minimized.