How to solve Robots.txt problem with WordPress fresh install?

Your robots file as of right now:

User-agent: Googlebot
Disallow: 
User-agent: *
Disallow: 
Disallow: /cgi-bin/
Disallow: /wp-admin/
Disallow: /wp-includes/
Sitemap: http://www.yadfaeq.com

You aren’t specifying anything for Googlebot so you should remove it. Additionally, Disallow: could be interpreted as Disallow: / which would block your entire site.

What your robots file should be:

User-agent: *
Disallow: /cgi-bin/
Disallow: /wp-admin/
Disallow: /wp-includes/
Sitemap: http://www.yadfaeq.com

Google often caches the robots.txt file so it may take some time for it to check for a new one. I suggest you use Google Webmaster Tools to help control what Google is indexing.

I do not see the changes you said you made to your robots.txt file. Perhaps your server is caching it as well?