I'm using FF behind a corporate firewall/proxy which forces us to enter our user credentials when accessing most Internet sites. I just updated to v30 this morning, and immediately upon restarting all those sites were blocked with an 'Access Denied' message from the proxy saying that my credentials were missing. In the past (and with other browsers) FF would pop up a prompt asking for my credentials. Since the update to v30 that prompt is no longer being shown, I have no opportunity to authenticate, and the proxy is blocking my access. I have tried clearing all caches, cookies, saved passwords, resetting FF, and I even blew away my profile dir. Nothing seems to be working. Any advice, suggestions, etc. would be greatly appreciated. Thanks. Linux - RedHat Enterprise Client v6.5 FF v30