Tested under build "200112012": Part of the web application I'm writing uses file uploads. The page that receives the upload will only accept "POST" requests. While the initial request occurs okay, if I select "View -> Page Source", the source that comes up is for the Jakarta Tomcat 4.0.1 "Illegal Method" page. This would imply that the browser is fetching the page a second time, using "GET" as the method. There are two problems with this: 1. The use of a different method to fetch the page's source is, IMHO, incorrect behaviour. 2. The web browser should not be reloading from the server without being directly instructed to. Reloading, for example, an "Add Item To Basket" page of an e-commerce system could result in quantities being doubled. Of note is that the "File -> Save Page As" option appears to avoid the need for a reload - the code it uses may help with this bug. Apologies for the lack of URL - providing a publically accessible example is not feasible in this case (lack of time available).

easy to find dupe and #2 on QA/known Bugs *** This bug has been marked as a duplicate of 55583 ***

Verify duplicate: James, http://bugzilla.mozilla.org/duplicates.cgi is a good starting place to look to see if bugs have been filed yet.