Unable to access stackexchange sites from this system

Posted by Sandeepan Nath on Super User See other posts from Super User or by Sandeepan Nath
Published on 2011-02-02T13:54:02Z Indexed on 2011/02/02 15:28 UTC
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Earlier, I was not able to access most of the stackexchange sites like stackoverflow, programmers.SE etc. on my home Windows XP system. I was able to access only a few like http://meta.stackexchange.com and not even http://www.meta.stackexchange.com (note the www). I tried many other sites like http://www.stackoverflow.com, http://area51.stackexchange.com/ but was getting page not found errors on all browsers. Even pinging from terminal was saying destination host unreachable. I did not check recently but may be all SE sites are unreachable now.

I was clueless about what could be the issue. I thought some firewall issue? So, I stopped AVG antivirus's firewall, then completely uninstalled it and even turned of windows firewall. But still not reachable even after fresh installation of Windows 7.

Then I noticed a "Too many requests" notice on google. This page -

http://www.google.co.in/sorry/?continue=http://www.google.co.in/#

I don't know why this appeared but I guess somehow too many requests might have been sent to these sites and they blocked me. But in that case, SE would be smart enough to show a captcha like google.

So, how to confirm the problem and fix it. Similar questions like these don't look solved yet -

Unable to access certain websites
Unable to Access Certain Websites

I have lately started actively participating in lots of SE sites. There are new new questions popping up in my mind every time and I am not able to ask them. Please help!

Thanks

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