Norton Vulnerability Protection cannot work with FireFox 22.0 on a Windows 7 Home Premium 64-bit system.
There has been some questions about this issue in other folders but there has not been a response from Symantec if they are working on the issue and an expected fix date. Maybe Symantec is not aware of this issue because this issue is raised in the "Norton Toolbar/Norton Identity Safe" folders. There is no folder for "Norton Vulnerability Protection" and I thought this "Norton Internet Security/Norton AntiVirus" is an appropriate folder to post this issue, as I just want my NIS 2013 to work, as of now it is not working.
As of June 26, 2013, Norton Vulnerability Protection no longer works in Firefox 22.0. This has been posted at this forum since June 24, 2013.