Looks to be more than a very quick glitch. I tried it in several browsers; got same failure and error message. Rebooted, tried again in several browsers - same result.
I've been thinking about why TheDoc can reach Snippets while some others can't. I wonder if he'd still be successful after leaving the site and then returning. (Maybe the problem event happened after he had a good "connection" to the site.)
Getting a "Forbidden You don't have permission to access /wp-content/w3tc/pgcache//snippets//_index.html.gzip on this server" message.
(Mods, feel free to remove this discussion once the proper authorities note the problem.)
http://css-tricks.com/snippets/jquery/automatically-discover-document-links-and-apply-class/
Does that work?
I am able to navigate all of it with no problem.
Edit: I contacted Chris through twitter to let him know just some of us are having the issue.
http://css-tricks.com/snippets/css/diagonal-graph-paper-gradient/
http://css-tricks.com/snippets/css/diagonal-graph-paper-gradient/
//snippets/css/diagonal-graph-paper-gradient//
Firefox 3.6, Safari 5, Chrome 12.0, Opera 11.11, and IE9 all fail to open Snippets for me.