Not sure what you mean by "blocking some sites"?
What sites are being blocked?
And why are you not able to unblock them?
All I'm seeing is:
+google-analytics.com
+google.com
Anything more then that?
What page is generating the "Firefox can't find the server at code.google.com" message?
Build identifier: Mozilla/5.0 (Windows NT 5.1; rv:20.0) Gecko/20121227 Firefox/20.0
What sites are being blocked?
And why are you not able to unblock them?
All I'm seeing is:
+google-analytics.com
+google.com
Anything more then that?
What page is generating the "Firefox can't find the server at code.google.com" message?
Build identifier: Mozilla/5.0 (Windows NT 5.1; rv:20.0) Gecko/20121227 Firefox/20.0