I’m getting this same error, too. I’m trying this page as a test:
I am using WordPress as the CMS with various plugins loaded, so I created a simple test page with the same meta-tags (but loading no plugins, javascripts, images, additional header info, etc.). It’s here:
This simplified page also fails to validate with the request timed out error.
Out of curiosity, I copied the same simplified page to another host, and it does verify! It can be seen here:
So it’s not the code or meta-tags causing the issue but something associated with that one domain. Again, the domain I need validated is http://www.thelingerieaddict.com.
Could my domain be on some sort of blacklist? I’ve had the host check, but they say they aren’t blocking any IPs or bots that Twitter uses.