First of all in order to know what whether or not you need a registry clean you have to know what kind of registry I am talking about. You also have to know what that particular kind of registry does, and what kinds of things happen when your registry is dirty. In the next several paragraphs I want to tell you about each of these things and in so doing hopefully answer the title question.
The type of registry that I am referring to is the registry that is used by all windows operating systems. So if you have a computer that runs with windows (which 95% of America does) than you need to read this article. The registry is used by windows to store all of the settings that are used in any bit of software that is ever run on your computer, and holds it whether or not that software is still on your computer (this is where you may start to see what a registry clean is all about). Anyway, settings may be the user preferences for simple things like colors and layouts, or more complicated settings for speeds, or orders of operation, or schedules of important events, OR less complicated but very much more important things like usernames and passwords that link to often very...