A friend told me something about a tool called fiddler2. It is a web debugging proxy. You only have to start this program and surf in the internet. You can see which pages / files are opened by each application, you can check the status (HTTP Status) and the used protocol, too.
It helps a lot by searching for errors!
July 7th, 2009 at 12:01 pm
I think Firebug does the same thing, but is just a plugin for Firefox and not a complete proxy.