This plugin sets the response timeout to 24 hours.
The setting `network.http.response.timeout` was changed from not being set in Firefox version 28 to a default limit of 300 seconds (5 minutes) in version 29.
You probably won’t notice this, unless you work with a page that has a long-running process that you have to wait more than 5 minutes for a response from.
To solve this, you can update this setting manually in `about:config`. or better yet, you can do it by installing this Add-On into Firefox.