After installing an update it now won't connect to the Internet at all?

I was online and a Firefox update popped up, it strongly suggested I install it which I did, my Internet connection is "good" but my home page won't load and just continues to show UNABLE TO CONNECT.......I'm at a loss!

Yes I'm having the same problem of Firefox 15.0 not connecting to my sites and seems to stay in search mode. I have added Firefox to my firewall to allow it access but all to no avail. Other browsers such as Google Chrome and IE connect to my sites but not Firefox. Any other suggestions would be welcomed.

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