After upgrading to Firefox 8, on our Windows 7 - 64 bit laptop computers, the browser hangs and just spins and gets stuck after I click "Save Draft" a few times while editing a post for our Wordpress website. After that FF no longer works to access any webpage or other website. Only shutting down the computer and restarting fixes the problem. Adding additional virtual memory to the computer seemed to allow more saves of a post on the Wordpress site before the hang occurs, but it still occurs. These problems do not seem to be occurring with our Windows Vista desktop computer (32 bit), even though it too is running Firefox 8.