After updating my lap top to W8, Firefox also updated itself to 17. After a reboot I was then totally unable to get FF to run at all, until I disabled WSA when it ran normally. (Same problem existed with FF16). Further poking around in WSA I found that FF will run if under 'Protected Applications(Advanced) you move from 'Protected' to 'Allow'. This does not sound too good as banking sites etc will not be protected I assume. Is there something I can do to get back to 'Allow'?