Regular web applications work on a synchronous model, where one web request is followed by a response that causes some action in the presentation layer. For example, clicking a link or the submit button makes a request to the web server with the relevant parameters. This traditional "click and wait" ...

The Affected test: Does this patch affect one of the programs on your computer? If it doesn’t affect your computer, you’re done. Whew! The Break test: Can you tell from the vendor’s web site or the patch’s description if installing it breaks something else that you care about? If installation ...